The mouth of Huong T...: The mouth of Huong Tich cave viewed from inside. Huong Tich cave-which is considered the most beautiful cave in Vietnam (Nam Thien De Nhat Dong)- is located in Huong pagoda's area, Ha Tay province, 60km southwest from Hanoi. KTS photo/ Nguyen Huy Thiem /Huy Thiem