A mismatch between the benchmark and the paper has been reported by a user at the [OGS Discourse forum](https://discourse.opengeosys.org/t/liakopoulos-th2m-h2m-benchmark-mismatch-with-grunwald-et-al-2022-fig-9-vertical-displacement-profile/1807). The vertical displacement figure (last one in the benchmark) doesn't match with Fig. 9 in the paper. Apart from this, there are some minor issues in the benchmark: - missing figure in the "Problem description" section - faulty legend labels Further suggested improvements: - add testing of data, [like in this benchmark](https://gitlab.opengeosys.org/ogs/ogs/-/blob/master/Tests/Data/TH2M/ExcavationTH2M/excavation_th2m.py#L529-535)