Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
ancient antique arch archeology attraction awesome beautiful beauty boulders calcite catacomb cave cavern caving chamber chasm color crystals dark earth evocative exploring fascinating fault formations geological geology grotto hall haunting hiking hole humid interior limestone lonely massive mineral moody mountain mystery natural nature old paleolithic passage passageway physics primordial realm rock scary scenic solitude specimens spelunking spiritual stalactites stalagmites stone subterranean tactile terrain texture tourism travel underground varied walls