Explore Vietnam's amazing Hang Son Doong cave by quadcopter




The Hang Son Doong cave in a remote part of central Vietnam near the Laos border, is so big it has an entire jungle growing in it. The "cave" is actually part of a network of 150 or so caves, many still not surveyed.

National Geographic published a fascinating feature on the system back in 2011.

  1. http://ngm.nationalgeographic.com/2011/01/largest-cave/jenkins-text?rptregcta=reg_free_np&rptregcampaign=2015012_invitation_ro_all#
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