Technical diver in cave system, Mexico.

mexico riviera maya adult adventure aqualung aquatic breathing apparatus cave cavern cenote color image discovery diver diving dripstone exploration flashlight formation front view full length geology grotto leisure activity limestone mineral mystery nature one person outdoors photography risk rock formation scuba divers scuba diving scuba mask sedimentary rocks speleology speleothem spelunking stalactite technical diving underground underwater unrecognizable person vertical wetsuit