One of our main reasons for visiting this area was a 2-day caving trek that we had arranged with Oxalis, the premiere adventure outfitter in Phong Nha. The Hang Va Expedition overnight journey included a trek through rugged karst jungle and visits to 2 caves in the area. On the first day we visited Nuoc Nut cave and enjoyed a picnic in the entrance. We then spent about 5 hours exploring the cave and photographing some of its most impressive formations. That evening we clambered down a treacherously sharp and steep rocky hillside to base camp, where we were excited to enjoy some of the best Vietnamese food we’d eaten yet; cooked in the middle of the jungle by Oxalis’ amazing local chefs.