This mountain is a lava dome made of magma blown to the surface of the earth. It prospered as a place of Shugendo (mountaineering asceticism) in the Middle Ages, and now it is a symbol of faith and prayer for the local people. It is a popular power spot because of the mountain mystique of the pyramid theories.
You can drive to the top by car, however don't miss Iwato Shrine near the middle of the mountain. There is Minakami shrine at the top of the mountain. so this mountain is also good for hiking.