The altitude is 1,889m.The spot develops in the migmatiteof the Early Silurian. There are mainly two tension cracks: one has a largergapewith a width of about 4.5m,the widest part reaches 6m, and the visible depth is up to 10m. It turns in the ridge with a width of 0.5m; another one has a narrowergapewith a width of 1m and a depth of 4m.It is a terrane fault caused by the earthquake action, but the blocks on both sides of the fracture surface have no obvious relative movement. It belongs to the earthquake microtopography.