With bluray rips, I don’t really see any way to avoid that unfortunately, unless someone else has already added the hashes for your release. Most people use it to scan their encoded releases, which will (in most cases) have already been added to AniDB by the release group. I’m a bit surprised though, that none of your rips are recognized. Have you checked the AniDB pages for your series to see if anyone uploaded hashes for bluray rips?
Unless I got the coordinates wrong, it appears to be part of a protected wetland area called Marais de Balençon. I can’t find much more information aside from hiking trails and this very short description on the merlimont website.
I might be off by a bit though, navigating maps on a phone is a pain for me.