The summit of the granite boulder looks exactly like a pair of breasts, so it’s known as "Breast-shaped Rock". It was formed when the granite body was cut by fractures (joints) and further underwent differential and spheroidal weathering and gravitational collapse.

The granite body was cut along multiple sets of fractures (joints) and underwent gravitational collapse.

After undergoing differential and spheroidal weathering, the remnant of the granite body looks like breasts.

 （1）                               （2）