ZEN DEVILS - Obscure ninja madness !!

As we were asked to leave the first urbex spot we visited by the security guard, we end up discovering caves (advised by this same security guard).
These caves were huge, with what looked like endless corridors and huge rooms.
But without proper lights, we were unable to go very far or take good photos.
A good place to go back to, with the right equipment, if anyone on the team remembers where it was, as it's in the middle of a forest.