diff --git a/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/cube_1x1x1.gml b/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/cube_1x1x1.gml
new file mode 100644
index 0000000000000000000000000000000000000000..dae3667b1e5ddae74fa166ccb8f1635cda72ea25
--- /dev/null
+++ b/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/cube_1x1x1.gml
@@ -0,0 +1,95 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<?xml-stylesheet type="text/xsl" href="OpenGeoSysGLI.xsl"?>
+
+<OpenGeoSysGLI xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ogs="http://www.opengeosys.org">
+    <name>cube_1x1x1_geometry</name>
+    <points>
+        <point id="0" x="0" y="0" z="0" name="origin"/>
+        <point id="1" x="0" y="0" z="1"/>
+        <point id="2" x="0" y="1" z="1"/>
+        <point id="3" x="0" y="1" z="0"/>
+
+        <point id="4" x="1" y="0" z="0"/>
+        <point id="5" x="1" y="0" z="1"/>
+        <point id="6" x="1" y="1" z="1"/>
+        <point id="7" x="1" y="1" z="0"/>
+    </points>
+
+    <polylines>
+        <polyline id="0" name="front_left">
+            <pnt>0</pnt>
+            <pnt>1</pnt>
+        </polyline>
+        <polyline id="1" name="front_right">
+            <pnt>4</pnt>
+            <pnt>5</pnt>
+        </polyline>
+        <polyline id="2" name="front_bottom">
+            <pnt>0</pnt>
+            <pnt>4</pnt>
+        </polyline>
+        <polyline id="3" name="front_top">
+            <pnt>1</pnt>
+            <pnt>5</pnt>
+        </polyline>
+        <polyline id="4" name="bottom_left">
+            <pnt>0</pnt>
+            <pnt>3</pnt>
+        </polyline>
+        <polyline id="5" name="bottom_right">
+            <pnt>4</pnt>
+            <pnt>7</pnt>
+        </polyline>
+        <polyline id="6" name="top_left">
+            <pnt>1</pnt>
+            <pnt>2</pnt>
+        </polyline>
+        <polyline id="7" name="top_right">
+            <pnt>5</pnt>
+            <pnt>6</pnt>
+        </polyline>
+        <polyline id="8" name="back_left">
+            <pnt>2</pnt>
+            <pnt>3</pnt>
+        </polyline>
+        <polyline id="9" name="back_right">
+            <pnt>6</pnt>
+            <pnt>7</pnt>
+        </polyline>
+        <polyline id="10" name="back_bottom">
+            <pnt>3</pnt>
+            <pnt>7</pnt>
+        </polyline>
+        <polyline id="11" name="back_top">
+            <pnt>2</pnt>
+            <pnt>6</pnt>
+        </polyline>
+    </polylines>
+    
+    <surfaces>
+        <surface id="0" name="left"><!-- x=0 -->
+            <element p1="0" p2="1" p3="2"/>
+            <element p1="0" p2="3" p3="2"/>
+        </surface>
+        <surface id="1" name="right"><!-- x=1 -->
+            <element p1="4" p2="6" p3="5"/>
+            <element p1="4" p2="6" p3="7"/>
+        </surface>
+        <surface id="2" name="top"><!-- z=1 -->
+            <element p1="1" p2="2" p3="5"/>
+            <element p1="5" p2="2" p3="6"/>
+        </surface>
+        <surface id="3" name="bottom"><!-- z=0 -->
+            <element p1="0" p2="3" p3="4"/>
+            <element p1="4" p2="3" p3="7"/>
+        </surface>
+        <surface id="4" name="front"><!-- y=0 -->
+            <element p1="0" p2="1" p3="4"/>
+            <element p1="4" p2="1" p3="5"/>
+        </surface>
+        <surface id="5" name="back"><!-- y=1 -->
+            <element p1="2" p2="3" p3="6"/>
+            <element p1="6" p2="3" p3="7"/>
+        </surface>
+    </surfaces>
+</OpenGeoSysGLI>
diff --git a/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/cube_1x1x1_quad.vtu b/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/cube_1x1x1_quad.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..cfbcf9127aabe8e535d6a7765c9de04abd9782fb
--- /dev/null
+++ b/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/cube_1x1x1_quad.vtu
@@ -0,0 +1,22 @@
+<?xml version="1.0"?>
+<VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian" header_type="UInt32">
+  <UnstructuredGrid>
+    <Piece NumberOfPoints="20"                   NumberOfCells="1"                   >
+      <PointData>
+      </PointData>
+      <CellData>
+      </CellData>
+      <Points>
+        <DataArray type="Float64" Name="Points" NumberOfComponents="3" format="appended" RangeMin="0"                    RangeMax="1.7320508076"         offset="0"                   />
+      </Points>
+      <Cells>
+        <DataArray type="Int64" Name="connectivity" format="appended" RangeMin=""                     RangeMax=""                     offset="648"                 />
+        <DataArray type="Int64" Name="offsets" format="appended" RangeMin=""                     RangeMax=""                     offset="868"                 />
+        <DataArray type="UInt8" Name="types" format="appended" RangeMin=""                     RangeMax=""                     offset="884"                 />
+      </Cells>
+    </Piece>
+  </UnstructuredGrid>
+  <AppendedData encoding="base64">
+   _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oAAAAAAAAAAAAAAAAQAAAAAAAAADAAAAAAAAAAIAAAAAAAAABAAAAAAAAAAFAAAAAAAAAAcAAAAAAAAABgAAAAAAAAAMAAAAAAAAABEAAAAAAAAADgAAAAAAAAAJAAAAAAAAAA0AAAAAAAAAEgAAAAAAAAAPAAAAAAAAAAoAAAAAAAAACAAAAAAAAAAQAAAAAAAAABMAAAAAAAAACwAAAAAAAAA=CAAAABQAAAAAAAAAAQAAABk=
+  </AppendedData>
+</VTKFile>
diff --git a/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/cube_strain_flow_data.include b/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/cube_strain_flow_data.include
new file mode 100644
index 0000000000000000000000000000000000000000..62fab02e407b6c5b6fade8b15d84c5b4abbbe24d
--- /dev/null
+++ b/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/cube_strain_flow_data.include
@@ -0,0 +1,132 @@
+<mesh>cube_1x1x1_quad.vtu</mesh>
+<geometry>cube_1x1x1.gml</geometry>
+<processes>
+    <process>
+        <name>HM</name>
+        <type>HYDRO_MECHANICS</type>
+        <integration_order>3</integration_order>
+        <dimension>3</dimension>
+        <constitutive_relation>
+            <type>LinearElasticIsotropic</type>
+            <youngs_modulus>E</youngs_modulus>
+            <poissons_ratio>nu</poissons_ratio>
+        </constitutive_relation>
+        <process_variables>
+            <displacement>displacement</displacement>
+            <pressure>pressure</pressure>
+        </process_variables>
+        <secondary_variables>
+            <secondary_variable internal_name="sigma" output_name="sigma"/>
+            <secondary_variable internal_name="epsilon" output_name="epsilon"/>
+            <secondary_variable internal_name="velocity" output_name="velocity"/>
+        </secondary_variables>
+        <specific_body_force>0 0 0</specific_body_force>
+    </process>
+</processes>
+<media>
+    <medium>
+        <phases>
+            <phase>
+                <type>Gas</type>
+                <properties>
+                    <property>
+                        <name>viscosity</name>
+                        <type>Constant</type>
+                        <value>1e-3</value>
+                    </property>
+                    <property>
+                        <name>density</name>
+                        <type>Constant</type>
+                        <value>1</value>
+                    </property>
+                </properties>
+            </phase>
+            <phase>
+                <type>Solid</type>
+                <properties>
+                    <property>
+                        <name>density</name>
+                        <type>Constant</type>
+                        <value>2000</value>
+                    </property>
+                </properties>
+            </phase>
+        </phases>
+        <properties>
+            <property>
+                <name>porosity</name>
+                <type>Constant</type>
+                <value>0.01</value>
+            </property>
+            <property>
+                <name>biot_coefficient</name>
+                <type>Constant</type>
+                <value>0</value>
+            </property>
+            <property>
+                <name>reference_temperature</name>
+                <type>Constant</type>
+                <value>293.15</value>
+            </property>
+            <property>
+                <name>permeability</name>
+                <type>OrthotropicEmbeddedFracturePermeability</type>
+                <intrinsic_permeability>k</intrinsic_permeability>
+                <mean_frac_distances>1e-4 2e-4 3e-4</mean_frac_distances>
+                <threshold_strains>10e-5 5e-5 1e-5</threshold_strains>
+                <fracture_normals> 1 0 0    0 1 0 </fracture_normals>
+                <fracture_rotation_xy>zero</fracture_rotation_xy>
+                <fracture_rotation_yz>zero</fracture_rotation_yz>
+            </property>
+        </properties>
+    </medium>
+</media>
+<parameters>
+    <!-- Mechanics -->
+    <parameter>
+        <name>E</name>
+        <type>Constant</type>
+        <value>1e9</value>
+    </parameter>
+    <parameter>
+        <name>nu</name>
+        <type>Constant</type>
+        <value>.3</value>
+    </parameter>
+    <!-- Model parameters -->
+    <parameter>
+        <name>k</name>
+        <type>Constant</type>
+        <value>1e-19</value>
+    </parameter>
+    <parameter>
+        <name>displacement0</name>
+        <type>Constant</type>
+        <values>0 0 0</values>
+    </parameter>
+    <parameter>
+        <name>pressure_ic</name>
+        <type>Constant</type>
+        <values>1e5</values>
+    </parameter>
+    <parameter>
+        <name>flow_in</name>
+        <type>Constant</type>
+        <values>1e-10</values>
+    </parameter>
+    <parameter>
+        <name>dirichlet0</name>
+        <type>Constant</type>
+        <value>0</value>
+    </parameter>
+    <parameter>
+        <name>disp</name>
+        <type>Constant</type>
+        <value>5e-4</value>
+    </parameter>
+    <parameter>
+        <name>zero</name>
+        <type>Constant</type>
+        <value>0</value>
+    </parameter>
+</parameters>
\ No newline at end of file
diff --git a/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/ref_x_strain_y_flow.prj b/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/ref_x_strain_y_flow.prj
new file mode 100644
index 0000000000000000000000000000000000000000..47e8aaf392aa663a3e1553711108a61ac48c7b18
--- /dev/null
+++ b/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/ref_x_strain_y_flow.prj
@@ -0,0 +1,248 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<OpenGeoSysProject>
+  <mesh>cube_1x1x1_quad.vtu</mesh>
+  <geometry>cube_1x1x1.gml</geometry>
+  <processes>
+    <process>
+      <name>HM</name>
+      <type>HYDRO_MECHANICS</type>
+      <integration_order>3</integration_order>
+      <process_variables>
+        <displacement>displacement</displacement>
+        <pressure>pressure</pressure>
+      </process_variables>
+      <secondary_variables>
+        <secondary_variable internal_name="sigma" output_name="sigma"/>
+        <secondary_variable internal_name="epsilon" output_name="epsilon"/>
+        <secondary_variable internal_name="velocity" output_name="velocity"/>
+      </secondary_variables>
+      <specific_body_force>0 0 0</specific_body_force>
+      <dimension>3</dimension>
+      <constitutive_relation>
+        <type>LinearElasticIsotropic</type>
+        <youngs_modulus>E</youngs_modulus>
+        <poissons_ratio>nu</poissons_ratio>
+      </constitutive_relation>
+    </process>
+  </processes>
+  <process_variables>
+    <process_variable>
+      <name>displacement</name>
+      <components>3</components>
+      <order>2</order>
+      <initial_condition>displacement0</initial_condition>
+      <boundary_conditions>
+        <boundary_condition>
+          <type>Dirichlet</type>
+          <parameter>dirichlet0</parameter>
+          <geometrical_set>cube_1x1x1_geometry</geometrical_set>
+          <geometry>left</geometry>
+          <component>0</component>
+        </boundary_condition>
+        <boundary_condition>
+          <type>Dirichlet</type>
+          <parameter>disp</parameter>
+          <geometrical_set>cube_1x1x1_geometry</geometrical_set>
+          <geometry>right</geometry>
+          <component>0</component>
+        </boundary_condition>
+      </boundary_conditions>
+    </process_variable>
+    <process_variable>
+      <name>pressure</name>
+      <components>1</components>
+      <order>1</order>
+      <initial_condition>pressure_ic</initial_condition>
+      <boundary_conditions>
+        <boundary_condition>
+          <type>Neumann</type>
+          <parameter>flow_in</parameter>
+          <geometrical_set>cube_1x1x1_geometry</geometrical_set>
+          <geometry>front</geometry>
+          <component>0</component>
+        </boundary_condition>
+        <boundary_condition>
+          <type>Dirichlet</type>
+          <parameter>pressure_ic</parameter>
+          <geometrical_set>cube_1x1x1_geometry</geometrical_set>
+          <geometry>back</geometry>
+          <component>0</component>
+        </boundary_condition>
+      </boundary_conditions>
+    </process_variable>
+  </process_variables>
+  <media>
+    <medium>
+      <phases>
+        <phase>
+          <type>Gas</type>
+          <properties>
+            <property>
+              <name>viscosity</name>
+              <type>Constant</type>
+              <value>0.001</value>
+            </property>
+            <property>
+              <name>density</name>
+              <type>Constant</type>
+              <value>1</value>
+            </property>
+          </properties>
+        </phase>
+        <phase>
+          <type>Solid</type>
+          <properties>
+            <property>
+              <name>density</name>
+              <type>Constant</type>
+              <value>2000</value>
+            </property>
+          </properties>
+        </phase>
+      </phases>
+      <properties>
+        <property>
+          <name>porosity</name>
+          <type>Constant</type>
+          <value>0.01</value>
+        </property>
+        <property>
+          <name>biot_coefficient</name>
+          <type>Constant</type>
+          <value>0</value>
+        </property>
+        <property>
+          <name>reference_temperature</name>
+          <type>Constant</type>
+          <value>293.15</value>
+        </property>
+        <property>
+          <name>permeability</name>
+          <type>OrthotropicEmbeddedFracturePermeability</type>
+          <intrinsic_permeability>k</intrinsic_permeability>
+          <mean_frac_distances>1e-4 2e-4 3e-4</mean_frac_distances>
+          <threshold_strains>10e-5 5e-5 1e-5</threshold_strains>
+          <fracture_normals>1 0 0    0 1 0</fracture_normals>
+          <fracture_rotation_xy>zero</fracture_rotation_xy>
+          <fracture_rotation_yz>zero</fracture_rotation_yz>
+        </property>
+      </properties>
+    </medium>
+  </media>
+  <time_loop>
+    <processes>
+      <process ref="HM">
+        <nonlinear_solver>basic_newton</nonlinear_solver>
+        <convergence_criterion>
+          <type>PerComponentDeltaX</type>
+          <norm_type>NORM2</norm_type>
+          <reltols>1e-15 1e-15 1e-15 1e-15</reltols>
+        </convergence_criterion>
+        <time_discretization>
+          <type>BackwardEuler</type>
+        </time_discretization>
+        <time_stepping>
+          <type>FixedTimeStepping</type>
+          <t_initial>0</t_initial>
+          <t_end>1e+09</t_end>
+          <timesteps>
+            <pair>
+              <repeat>1</repeat>
+              <delta_t>1e+08</delta_t>
+            </pair>
+          </timesteps>
+        </time_stepping>
+      </process>
+    </processes>
+    <output>
+      <type>VTK</type>
+      <prefix>x_strain_y_flow</prefix>
+      <variables>
+        <variable>displacement</variable>
+        <variable>pressure</variable>
+        <variable>sigma_xx</variable>
+        <variable>sigma_yy</variable>
+        <variable>sigma_zz</variable>
+        <variable>sigma_xy</variable>
+        <variable>epsilon_xx</variable>
+        <variable>epsilon_yy</variable>
+        <variable>epsilon_zz</variable>
+        <variable>epsilon_xy</variable>
+        <variable>velocity</variable>
+      </variables>
+      <timesteps>
+        <pair>
+          <repeat>1</repeat>
+          <each_steps>10</each_steps>
+        </pair>
+      </timesteps>
+    </output>
+  </time_loop>
+  <linear_solvers>
+    <linear_solver>
+      <name>general_linear_solver</name>
+      <eigen>
+        <solver_type>BiCGSTAB</solver_type>
+        <precon_type>DIAGONAL</precon_type>
+        <max_iteration_step>10000</max_iteration_step>
+        <error_tolerance>1e-12</error_tolerance>
+      </eigen>
+      <lis>-i bicgstab -p ilu -tol 1e-12 -maxiter 10000</lis>
+    </linear_solver>
+  </linear_solvers>
+  <nonlinear_solvers>
+    <nonlinear_solver>
+      <name>basic_newton</name>
+      <type>Newton</type>
+      <max_iter>50</max_iter>
+      <linear_solver>general_linear_solver</linear_solver>
+    </nonlinear_solver>
+  </nonlinear_solvers>
+  <parameters>
+    <parameter>
+      <name>E</name>
+      <type>Constant</type>
+      <value>1e+09</value>
+    </parameter>
+    <parameter>
+      <name>nu</name>
+      <type>Constant</type>
+      <value>0.3</value>
+    </parameter>
+    <parameter>
+      <name>k</name>
+      <type>Constant</type>
+      <value>1e-19</value>
+    </parameter>
+    <parameter>
+      <name>displacement0</name>
+      <type>Constant</type>
+      <values>0 0 0</values>
+    </parameter>
+    <parameter>
+      <name>pressure_ic</name>
+      <type>Constant</type>
+      <values>1e+05</values>
+    </parameter>
+    <parameter>
+      <name>flow_in</name>
+      <type>Constant</type>
+      <values>1e-10</values>
+    </parameter>
+    <parameter>
+      <name>dirichlet0</name>
+      <type>Constant</type>
+      <value>0</value>
+    </parameter>
+    <parameter>
+      <name>disp</name>
+      <type>Constant</type>
+      <value>5e-04</value>
+    </parameter>
+    <parameter>
+      <name>zero</name>
+      <type>Constant</type>
+      <value>0</value>
+    </parameter>
+  </parameters>
+</OpenGeoSysProject>
diff --git a/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/x_strain_y_flow.prj b/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/x_strain_y_flow.prj
new file mode 100644
index 0000000000000000000000000000000000000000..b5a64de135316163e019c6b59066e001d5369557
--- /dev/null
+++ b/inst/extdata/benchmarks/OrthotropicEmbeddedFracturePermeability/x_strain_y_flow.prj
@@ -0,0 +1,119 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<OpenGeoSysProject>
+    <include file="cube_strain_flow_data.include"/>
+    <time_loop>
+        <processes>
+            <process ref="HM">
+                <nonlinear_solver>basic_newton</nonlinear_solver>
+                <convergence_criterion>
+                    <type>PerComponentDeltaX</type>
+                    <norm_type>NORM2</norm_type>
+                    <reltols>1e-15 1e-15 1e-15 1e-15</reltols>
+                </convergence_criterion>
+                <time_discretization>
+                    <type>BackwardEuler</type>
+                </time_discretization>
+                <time_stepping>
+                    <type>FixedTimeStepping</type>
+                    <t_initial>0</t_initial>
+                    <t_end>1e9</t_end>
+                    <timesteps>
+                        <pair>
+                            <repeat>1</repeat>
+                            <delta_t>1e8</delta_t>
+                        </pair>
+                    </timesteps>
+                </time_stepping>
+            </process>
+        </processes>
+        <output>
+            <type>VTK</type>
+            <prefix>x_strain_y_flow</prefix>
+            <timesteps>
+                <pair>
+                    <repeat>1</repeat>
+                    <each_steps>10</each_steps>
+                </pair>
+            </timesteps>
+            <variables>
+                <variable>displacement</variable>
+                <variable>pressure</variable>
+                <variable>sigma_xx</variable>
+                <variable>sigma_yy</variable>
+                <variable>sigma_zz</variable>
+                <variable>sigma_xy</variable>
+                <variable>epsilon_xx</variable>
+                <variable>epsilon_yy</variable>
+                <variable>epsilon_zz</variable>
+                <variable>epsilon_xy</variable>
+                <variable>velocity</variable>
+            </variables>
+        </output>
+    </time_loop>
+    <process_variables>
+        <process_variable>
+            <name>displacement</name>
+            <components>3</components>
+            <order>2</order>
+            <initial_condition>displacement0</initial_condition>
+            <boundary_conditions>
+                <boundary_condition>
+                    <geometrical_set>cube_1x1x1_geometry</geometrical_set>
+                    <geometry>left</geometry>
+                    <type>Dirichlet</type>
+                    <component>0</component>
+                    <parameter>dirichlet0</parameter>
+                </boundary_condition>
+                <boundary_condition>
+                    <geometrical_set>cube_1x1x1_geometry</geometrical_set>
+                    <geometry>right</geometry>
+                    <type>Dirichlet</type>
+                    <component>0</component>
+                    <parameter>disp</parameter>
+                </boundary_condition>
+            </boundary_conditions>
+        </process_variable>
+        <process_variable>
+            <name>pressure</name>
+            <components>1</components>
+            <order>1</order>
+            <initial_condition>pressure_ic</initial_condition>
+            <boundary_conditions>
+                <boundary_condition>
+                    <geometrical_set>cube_1x1x1_geometry</geometrical_set>
+                    <geometry>front</geometry>
+                    <type>Neumann</type>
+                    <component>0</component>
+                    <parameter>flow_in</parameter>
+                </boundary_condition>
+                <boundary_condition>
+                    <geometrical_set>cube_1x1x1_geometry</geometrical_set>
+                    <geometry>back</geometry>
+                    <type>Dirichlet</type>
+                    <component>0</component>
+                    <parameter>pressure_ic</parameter>
+                </boundary_condition>
+            </boundary_conditions>
+        </process_variable>
+    </process_variables>
+    <nonlinear_solvers>
+        <nonlinear_solver>
+            <name>basic_newton</name>
+            <type>Newton</type>
+            <max_iter>50</max_iter>
+            <linear_solver>general_linear_solver</linear_solver>
+        </nonlinear_solver>
+    </nonlinear_solvers>
+    <linear_solvers>
+        <linear_solver>
+            <name>general_linear_solver</name>
+            <lis>-i bicgstab -p ilu -tol 1e-12 -maxiter 10000</lis>
+            <eigen>
+                <solver_type>BiCGSTAB</solver_type>
+                <precon_type>DIAGONAL</precon_type>
+                <max_iteration_step>10000</max_iteration_step>
+                <error_tolerance>1e-12</error_tolerance>
+            </eigen>
+        </linear_solver>
+    </linear_solvers>
+</OpenGeoSysProject>