Gorgeous Drone Video of Vietnam’s Hang Son Doong, The Largest Known Cave in the World

Beijing-based travel photographer Ryan Deboodt captured some truly breathtaking aerial video of the Hang Son Doong cave in Vietnam using a GoPro Hero 4 attached to a DJI Phantom 2 drone. The limestone cave, which features the some of the largest known stalagmites and a big underground river, was first discovered in 1991.

via PetaPixel