We are going to discover that large pyramids are useful somehow. They appeared twice and both conformed to a global civilization. The first was the era between 45,000 BP through 13,000 BP and the deliberate Pleistocene Nonconformity. I suspect most such sites are underwater. The second was the high Atlantean Bronze Age civilization that met catastrophe in 1159 BC.
Claiming these are natural is boneheaded and an insult to common intelligence. Mere precision denies all that.
We need a global archeological imitative to put all this together. The data has become overwhelming and effective subsea tech is also available..