Entrance in Thieng Kung cave, Halong bay, Thailand

---

Size: 5184px × 3456px
Photo credit: © Valerii Shanin / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: adventure, cave, cavern, cliff, color, dark, deep, dirty, entrance, erosion, explore, exterior, formation, geology, granite, grotto, hiking, light, limestone, mystery, narrow, natural, nature, outdoor, outdoors, passage, pit, rock, rocks, rough, speleology, spooky, stone, tourism, travel, tunnel, underground