by Long-Vietravel on Flickr.Thien duong cave in Quang Binh, the longest cave in Vietnam.
#South East Asia, #asia, #stalagmites, #indochina, #landmark
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by Long-Vietravel on Flickr.Thien duong cave in Quang Binh, the longest cave in Vietnam.
#South East Asia, #asia, #stalagmites, #indochina, #landmark