The Earth Forest (Tulin) in Yuanmou, a scenic spot in China's Yunnan Province is made up of five areas, covering an area of 50 sq km. It was formed by geological movement and soil erosion one or two million years ago. It is named for its shape like immense forest and the main composition of the expansion earth.

The whole landscape of the Soil Forest in Yuanmou is mainly castle, screen, curtain and column, including the highest standing at about 40 meters and is very grand.

Interestingly, the earth of Yuanmou Earth Forest is rock, a kind of sand rock mixed with clay. It has yellow color and loose texture. The rocks are seriously weathered thus their surface looks very much like earth. The yellow rocks gleam under the sunlight as if they are built with gold. Larger ones are like castle while smaller ones are like pylon, in various shapes. Quite a magnificent sight!

The earth forest is widespread in Yuanmou Basin. Different areas have different features due to the extent they have been weathered and eroded.

In 2002, famed Chinese movie director Chen Kai Ge shot his movie The Promise (无极） here, and later director Zhang Yi Mou came here to shoot his movie Riding Alone for Thousands of Miles (千里走单骑）.More people got to know Yuanmou Soil Forest as a result.