natural cave with underground river (laos)

natural cave with underground river (laos), backlight, cave formations, cave mouth, caving, concretions, natural cave, river cave, speleothems, spelunking, stalactites, underground river, viang xai

Natural cave (Laos)

Spotted near the road that goes East from Vieng Xai.­ I bet this large cave has never been explored.­ The river flows toward the cave and disappears in the darkness.­

More images of ▶ backlight cave formations cave mouth caving concretions natural cave river cave speleothems spelunking stalactites underground river viang xai
Laos (all photos)
Viang Xai, Laos