This company was absolutely incredible from start to end. We went with Oxalis for 2 different trips. The Tu Lan 1-day trip was a fun-filled day where we got to visit 3 caves. It was cold when we went so we couldn't swim through the wet cave, but our guide compensated for it by showing us an even cooler cave of the Tu Lan system. Our guide, Vu, was a key factor in the enjoyment of our trips. He also led our second trip with Oxalis to the 2-day Hang En trip. Him and Ta were extremely professional, knowledgeable, conscious of safety, and just a blast to be around. The porters and guides were very helpful and whipped up incredible meals for us. The meals were a pleasant surprise!! They employ local people and use only local ingredients. They highly model respect for the environment and ensured that all visitors followed suit.
For packing for Hang En, be sure to follow their guidelines specifically! Everything they included was needed. Waterproof pants or quick-dry bottoms saved our lives in the cold weather when we did river crossings (which were awesome). Be sure to pack a warm sweater for sleeping in the cave! Other than that, Oxalis provides literally everything else (gloves, helmet, head lamp, boots, water bottle + filtration system, tent, mat, sleeping bag, and endless amounts of snacks and food).
Visit Phony Nha before it gets too touristy and developed! You will not regret it.
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