After breakfast at Mr Linh’s Homestay, you will depart for Quang Uyen, a district inhabited primarily by Nung ethnic minority communities. Due to their isolation and the remote nature of the district, their centuries old traditions and culture remain recognizably distinct from other minorities in Vietnam. This remoteness and traditional simplicity is what makes Quang Uyen so appealing, and you will stop at a local restaurant to enjoy your lunch. In the early afternoon, continue to drive to venture deep underground into the magical Nguom Ngao Cave, for a very different, but no less impressive natural wonder. The cave stretches for 2,144 meters underground and is brimming with incredible stalactites and stalagmites. And, your highlight of the tour is that we take you to one of the most incredible natural wonders in Northern Vietnam: Ban Gioc Waterfall . This breath-taking 300-metre wide waterfall sits right on the border between China and Vietnam, amidst a beautiful mountainous landscape. While you’re here you can spend your time relaxing in the glow of the natural beauty, take some amazing photos, and and board a bamboo boat that will take you so close to the falls you’ll feel the water splashes on your face, practically sitting at the very edge of Vietnam, so close to China that you can actually touch it. Rounding out the day, you will then travel to Quang Uyen where you will have dinner and stay overnight at Nung’s house. Highlights and activities: Ban Gioc waterfall, Nguom Ngao cave, Frontier Vietnam - China, ethnic villages, and a 3-5km walk.