Mount Matter-Horn is described in the Legend of Wishbringer as a mountain peak close to the spirits in the sky.

A knight, seeking the hand of Morning-Star, attempted to climb the Mount to seek advice from the spirits, but instead fell to his death.

In recent years scientists have speculated that this peak, as described in the Legend, would be as large as Mount Foobia, and is very likely the place where the Great Brogmoid standing on our world would place his other foot.