Explore the ancient caves of Hang Son Doong, Vietnam. Hang Son Doong is one of the largest caves in the world and features a fast-flowing underground river. For spelunkers, exploring Hang Son Doong is the equivalent of scaling Mount Everest.
Five times larger than the nearby cave that previously held the record of the largest in Vietnam, Sơn Đoòng was named after the Vietnamese words for “mountain river,” because of its own large, fast-flowing river inside it.
jonathanirish: “ Yup, there’s actually a log through which you can drive in Sequoia National Park. Called Tunnel Log, it’s located on the way up to Moro Rock. Driving through a tree is such a novelty that it can be a busy place most anytime of the.