Do the mounds depict the Gulf of Mexico and the Yucatan (as an island) in the BC years? Page 37, PreColumbian Architecture in Eastern North America shows 3 mounds, one shaped like a wide V and two shaped like a circle, rectangle. The V shaped mound is reminiscent of the Yucatan shape separated from the neck of Mexico (hooked to Texas) and separated from Guatemala at Atitlan. If you look at Earthviewer ([url=http://WWW.FORMILAB.CH/EARTHVIEW) there are two notches, one on the Yucatan plate and an inverted one off Cape Canaveral, Florida. Is that where the Yucatan was a long time ago?

Is this homework? It appears to be copied from something (as are your other questions). There is a homework section.

:eek: No, not homework. I have had a life-long interested in the mound builders.

I notice you have several life-long interests, two of which have been combined. https://www.askmehelpdesk.com/astronomy/triangulum-constellation-egyptian-name-406722.html#post2035522

Sorry, It is WWW.FOURMILAB.CH/EARTHVIEW. That also shows on the Gulf of Mexico seafloor a round circle off Campeche, Mexico with partial 2 outer circles. Was it a collapsed volcano? Was it Atlantis?