Amargosa was a Class-E Planet colonized by Mars. It was founded approximately 329 IE. Together, with Gilead, it supplied approximately sixty percent of Fairgha's food before the colony was destroyed.

As a Martian colony, it hosted moderate interstellar traffic. The native vegetation used a dark red substance for photosynthesis. However, the soil could support crops from other worlds, including Earth. While the planet had it’s share of insects, it did not have bird analogs most Class-E worlds had. Flying creatures were mammalian or reptilian in nature. Other native life forms included large, shaggy livestock called moosalo, wolf-like predators called lycanths, a three-legged deer analog called gosalope, and a very large predator called an ursoid. Small vermin included wuzzles and squonks.

Amargosa was unusual for a Class-E world as, relative to the other planets in its star system, it had a retrograde rotation. As such, residents referred to the sun rising in the west and setting in the east. The planet had two moons, one comparable to Luna.

When the Gelt invaded, they attempted to rename the planet “Cyal.” However, because most of the population survived the initial incursion, the name did not stick.

Appearances: No Marigolds in the Promised Land, Gimme Shelter, The Children of AmargosaBroken Skies