So far as known this marks the northern limits of Jaredite occupancy of the north continent.
This fixes the center of Jaredite civilization for a period of some sixteen centuries in Central America.
Ether was the last of the Jaredite prophets, and witnessed the destruction of the race.
That city marked the southern limits of the Jaredite empire.
So it is not to be wondered at that the description of the Jaredite government and civilization is so very unsatisfactory.