Son Doong Cave 5 As of 2009 it has the largest known cave passage cross-section in the and is located near the Laos–Vietnam border. Inside is a large, fast-flowing subterranean river. It was formed in Carboniferous/Permian
Check Us Out,Inspirations Mountain Quotes, Amazing Mountains Caves and Canyons, Got some amazing Mountain Photography, Climbing mountains is awesome! Hiking is life, Hoping you live by these words, Living in the Mountains, Camping Photography for Inspiration to Camp out with Friends. Camping as a Couple, Outdoor Life, Out in Nature, Loving Nature Some Wise Words in Life, What a VIew, Some Snowy Mountains, Tent,Share with me some travel tips, tick down cities on your bucket l..