First time I found giant steps buried smaller steps. Tread to riser ratio is the same. I have found dozens of examples since. I believe this is evidence of past cultures consisting of larger races of people who died out or moved. They were replaced by people of shorter stature. In this case using the proportions of the steps as a guide, 12 foot tall people were replaced by eight foot tall people.
I placed my hand here to show that the older larger steps continue under the smaller, more crudely built steps. Evidence of reconstruction of the site, with loss of construction skills.
Rounded edges of this pyramid made it able to resist flood damage from tidal wave or hurricane flooding. I believe these structures were built to provide high ground near agriculture areas prone to tidal wave and severe storm threat. Other sites show partial burial by lava flows. These people struggled to maintain civilization in a much more violent world.