Cave of the Crystals

Description:         This relatively unexplored cave is connected to the Naica Mine 300 metres below the surface in Naica, Chihuahua, Mexico. The main chamber contains giant selenite crystals, some of the largest natural crystals ever found. The cave's largest crystal found to date is 12 m in length, 4 m in diameter and weighs 55 tons. The cave is extremely hot;  air temperatures reach up to 136 °F with 90 to 99 percent humidity. Without proper protection, people can only endure approximately ten minutes of exposure at a time.

Starting location: Warriors start off 500 yards apart. 

Hazards: Heat and humidity; darkness; huge, fragile crystals

Difficulty Bonus: +1 for those without appropriate life support