Possible locations-

other Cumorahs

Other Theories of Book of Mormon Geography

Proposed locations for the Hill Cumorah other than in New York

Despite the teachings of Joseph, Oliver and their contemporaries about the New York Cumorah, various authors have proposed alternative settings. These alternatives are based on the premise that the New York Cumorah was a false tradition and that modern scholars are better qualified to determine the location of the real Cumorah.

Baja California

Unknown Location

A collection of additional geography theories is available here: https://bookofmormon.online/map

These are rough approximations of alternative theories.