Waking up with this view was one of the highlights of the #SonDoong360 expedition. This camp rests just below the second doline, or sinkhole, of the world's largest cave - and stepping out of the tent gives you this view in the morning.

Waking up with this view was one of the highlights of the #SonDoong360 expedition. This camp rests just below the second doline, or sinkhole, of the world’s largest cave – and stepping out of the tent gives you this view in the morning.