na pomezi caves, vapenna, moravia, czech republic, 16 april 2022: natural dripstone rock formations with stone decoration in

abyss adventure ancient attraction beautiful cave cavern caving czech dark darkness deep discover dungeon exploration explore formation geological geology ground heritage inside interior karst labyrinth landscape light limestone moravia moravian mountain national natural nature nobody outdoor rock shape sightseeing speleology stalactite stalactites stalagmite stone tourism travel tunnel underground unique wall