Absolute fantastic experience, a complete adrenaline rush - even for a couple of extreme adrenaline junkies. I would highly recommend this for anyone looking for an interesting challenge. I will be going back. Our group of 4 = 2 masters, 4 bachelor's, 100+ combined years of scuba instructor experience, 20+ years active Law Enforcement, 18 Years crime lab, and multiple years anti - human and drug smuggling work, for starters - and WE LOST! :) We will go back