This shows ~1,200 years of seawater erosion of the Khafre Pyramid, compressed into one minute.
For the first ~500 years a high ocean stand holds about 300 ft above the base; its waves lap the soft Tura limestone casing and dissolve it (carbonic acid) at roughly 0.08 ft/year — about one inch of perpendicular recession annually, and ~14× faster than the slow dissolution on submerged surfaces below.
As the sea recedes, it then pauses at successively lower stands, each held ~75–100 years, and each carves a distinct horizontal band where the casing is stripped to the bare core. Loosened blocks slough off at their own pace and fall down each face, piling into talus that mounds toward the center of all four sides.
The smooth white cap above the highest waterline is never reached and survives intact.
@randallwcarlson What’s the chance that these sites were build more than 10k years ago to effect the earths gravity so that when shifts happen they don’t affect as much as they normally would?
@PsycheWizard His wife was cheating you can tell cause she was all about the kids and was leaving him out. He was isolated and depressed and anxiety won…