3d定跨度准确99方法

简介：The magma lake is very large, and the surrounding rock walls are very strong after being burned at high temperatures. However, each time the magma erupts, it will continue to erode the surrounding areas, causing the magma lake to continue to expand. After an unknown number of years, this magma lake has several Kilometers in diameter, you can imagine how amazing it is for an underground magma lake to be so big.