Fig. 1From: Estimating in situ rock mass strength and elastic modulus of granite from the Soultz-sous-Forêts geothermal reservoir (France)(Figure modified from Heap et al. (2017))a Map of France showing the location of the Bas-Rhin (Lower Rhine) department of Alsace (in red). b Map of the Bas-Rhin department of Alsace (shown in red in a) showing the location of the major cities/towns and the geothermal sites and geothermal boreholes of Soultz-sous-Forêts and RittershoffenBack to article page