The Hav-Musuvs is a legendary race in Paihute Indian tradition.
Myth
The Hav-Musuvs were allegedly an Egyptian or Grecian-like sea-faring race who discovered huge caverns around 3 to 5 thousand years ago within, and later deep beneath the Panamint Mts. of California.
Within these they then established their vast underground cities. When the inland sea (now Death Valley) which connected the ocean in ancient times dried up, they had no way to carry on trade with other parts of the world. As a result of this, according to Paihute Indian tradition, they began to build and fly 'silvery eagles' which became increasingly advanced as time went on. They then evidently established interplanetary and later interstellar travel, exploration and colonization.