Formations inside the Gokgol Cave, Zonguldak, Turkey, September 5, 2019, Zonguldak, Turkey

---

Size: 5472px × 3648px
Photo credit: © Mehmet Kalkan / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: adventure, ancient, antique, archeology, attraction, calcite, cave, cavern, colorful, dark, destination, earth, formation, formations, geologic, geological, geology, grotto, hole, humid, indoor, interior, landscape, light, limestone, mineral, moist, mountain, mystery, natural, nature, rock, rocky, scary, sight, speleology, stalactite, stalagmite, stone, structure, tourism, tourist, travel, tunnel, turkey, underground