new aphon's cave

abhazia abkhazia absence abyss adventure afon aphon aragonite background beauty calcite cave caver cavern caving challenge chasm cold color courage danger dark deep descend desert dirty discover dissolve drip entrance exploration explore exploring extreme formation gem geo geology grotto hall hole illuminated indoor indoors interior lava light limestone mineral mining mist mystery natural nature old orange outdoor passage pattern pillar quiet reflect rhinestones rock scenics speleologist speleology spelunker spelunking stalactite stalagmite stone study subterranean travel tunnel under underground vertical volcanoes