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13th Annual Smithsonian Magazine Photo Contest Travel
Doline 1, Son Doong cave, Vietnam

A 5-day trek through Hang Son Doong, the largest cave in the world. Located in Phong Nha-Ke Bang National Park in the Quang Binh province of Central Vietnam

Photo Detail
Date Taken: 04.2015
Date Uploaded: 10.2015
Photo Location: Phong Na Ke Bang, Vietnam
Copyright: © matthias hauser
Awards
Photo of the Day: 10.19.15
Editor's Pick