Thank you for the message. There is loads of calcite and flowstone here. Some rooms are even full of proper crystals. I haven't got any proper photographs of it, as its a proper headache to get there.
I think using a DistoX, compass etc is a must. I kinda winged it the first attempt and honestly it was a mistake. I am thinking of bringing 2 tripods with a marker the next time, then also align them to magnetic North. But yeah, caves aren't easy accessible from where I live. Its at least a 6 hour drive, so for the next attempt I will be more prepared.