Diver using side mount gear in cave in Mexico.

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