大小洞天位于三亚以西40公里处，有着800多年的历史。大小洞天占地面积22.5平方米，以美丽的夕阳、洞穴、翠绿的群山和奇石为特色。
Daxiao Dongtian Scenic Spot has a history of more than 800 years.
Located 40 kilometers west of Sanya, Daxiao Dongtian Scenic Spot has a history of more than 800 years. It covers 22.5 square kilometers, featuring gorgeous sunsets, caves, verdant mountains and bizarre stones. The place is perfect to appreciate spectacular sunset on the beach with those rocks that witness the passing of history. It is the most popular mountain for its special views of the sea, typical mountain landscape and beautiful rocks, which have been the subject of many classic Chinese poems. It is also home to the Natural Museum of Sanya, which features dinosaur fossils.
Admission: 135 yuan
Hours: 7 a.m. to 7 p.m.
Get there: Bus from Yalong Bay