Hang Sơn Đoòng
Largest cave passage in the world, located in Quảng Trị, Vietnam
From Wikipedia, licensed CC BY-SA 4.0.
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★ 4.0 average from 1 person · 1 entry
Largest cave passage in the world, located in Quảng Trị, Vietnam
From Wikipedia, licensed CC BY-SA 4.0.
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★ 4.0 average from 1 person · 1 entry