The Yarasa ini cave has a total length of 64 m and displacement of 2 m. From ancient times, this cave has served as a temporary shelter for people or a place to keep pets. In April 1989, hundreds of bats were killed in a cave as s result of a fire by children living in nearby villages.
She is one of the few volcanic caves in our country – it was formed due to a huge gas bubble during the eruption of the volcano and the subsequent cooling of the magma. During the Paleogene, the Eastern Rhodopes were covered by powerful volcanic activity, which took place at the bottom of a shallow and warm sea and partly on land.
There are long-fingered bat (Myotis capaccinii), Greater mouse-eared bat (Myotis myotis), Lesser mouse-eared bat (Myotis blythii), Common bent-wing bat (Miniopterus schreibersi), Greater horseshoe bat (Rhinolophus ferrumequinum), Mediterranean horseshoe bat (Rhinolophus euryale) and Lesser horseshoe bat (Rhinolophus hipposideros).