The cave "Dobrostanski Biser" about 1km from Marciganica hut near Dobrostan village in Rhodope mountain, Bulgaria

---

Size: 6016px × 4016px
Photo credit: © PETAR MLADENOV / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: ancient, attraction, biser, bulgaria, cave, caver, cavern, caving, colorful, column, dark, deep, dobrostan, europe, exploration, formation, geologic, geological, geology, ground, hole, interior, limestone, mountain, national, natural, nature, park, rhodope, rock, slovenia, speleology, stalactites, stalagmite, stalagmites, stone, tourism, train, travel, tunnel, underground, water, wet