Kamran A.
Google
This doesn't feel safe at all. You've been taken through the deep mine corridors, 24 persons all at once, no first aid kits, no means of evacuation. Some parts of the route are as narrow as 40sm in width, and 120 sm in height, so think twice before deciding to go down, especially if you're prone to claustrophobic or panic attacks. Instructors doesn't stress hard enough how narrow is this place, I believe if they have showed some video footage of what it's like... Anyway, you've been warned!