The constant trickling of water from the great speed of the currents from the waterfall can often cause erosion, the water will constantly hit against the rock surfaces which are softer and more vulnerable.
Formed gradually the pyramid peak is in California's crystal range, the mountain/peek has reputation for the difficulty of climbing and supposedly the hardest climbable mountain because of its flat surface because of glacier a
The pyramid peak is where multiple (three or more) corrie's meet in a mountain like area meets often the mountains will be tall shards with smooth, or rough and ragged surfaces on the cliff like edges.