Hanoi: Located in the south of Vinh Hy Bay, at the foot of Nui Chua National Park, Vinh Hai commune in Khanh Hoa province, Hang Rai is renowned for its remarkable natural landscape and distinctive waterfall terrain by the sea. The site is named ‘Hang Rai’ due to the presence of numerous otter species inhabiting the area. Visitors might be fortunate enough to witness otters foraging in groups or retreating to their caves for rest.
According to Vietnam News Agency, Hang Rai is also notable for its fossil reef, featuring a jagged surface reminiscent of Mars or the Moon. This characteristic adds to the allure of the region, drawing nature enthusiasts and tourists alike to experience its unique geological formations.