Tu San canyon – the deepest canyon in Southeast Asia in Ha Giang
The Tu San canyon is located at the foot of the Ma Pi Leng pass (Meo Vac district, Ha Giang), with the Nho Que river winding around the curve of the Hanh Phuc road, which is a canyon located in the valley with the most unique geological tectonics in Vietnam. This is also considered the deepest canyon in Southeast Asia.