Maisan is as if the entire mountain was poured with concrete as if by human rubbing it. This is because during a flood, rocks, gravel, sand, and mud were pushed together and hardened by the pressure of water (aqueous rock, sedimentary rock). If you look closely, you can see that the rock has been hollowed out and formed a small cave as if it had been bombed or eaten. This is a tarpony terrain. Weathering usually starts on the surface of the rock, but in Mt. Mai, the weathering starts from the inside of the rock. It was created by exploding and pushing out rocks, and it is the most developed tarpony terrain in the world.
In addition, there is a phenomenon of inverted icicles in Maisan, where icicles rise into the sky when purified water is poured on it in winter. In particular, such a phenomenon often occurs around Eunsusa Temple and Tapsa Temple.