Interior of Ali Sadr Cave, Hamadan, Hamedan, Persia, Iran, Asia

ali asia asian being beings cave cave caves chalk climb climbing climbs descent dripstone dripstones geologic geological geologically geology hamadan hamedan human humans illuminated illumination illuminations indoor indoors inside interior interior iran iranian light lighting lights lime limestone lit of people persia persian person persons photo sadr seeing sight sights stair stair climbing staircase staircases stairs stairway stairways stalactite stalactites steps stone tourism tourist touristic touristical touristically tourists touristy up view views worth