Okay! Riehen, Voltaplatz and Otterbach are the towns/villages, I guess. I still don't get at what locations they are drilling. If they sunk a shaft at Voltaplatz and Otterbach and the geology is correct, there is little reason to be mistrusting. Riehen is the interesting one.

Right. Found it.

The test sites are at Otterbach, they drilled 2 wells, with the first one not successful so they had to start all over again.

From this graph it seems they are drilling the real thing at the Voltaplatz. (Fran, any chance you could confirm this?) So they're not on top of the brittle fault, but I'm really curious if people know how the main fault starts behaving at greater depth...