World Two

 was one of the many worlds of Multiworld.

When Sontarans crash-landed on Multiworld, Rory was thrown in World Two. World Two recreated Black Rock, Idaho, around the year 1880.

Variations of the Sontarans got stranded on World Two as well, and they acted as the local population. One of the Sontaran variation was called Sonny Taran. (COMIC: When Worlds Collide)