Sector 12

Sector 12, also known as the Lava Pits, is a highly hazardous location. In addition to the aforementioned lava, it is within weapons range of the Predacon base, and is also prone to energon storms.

Beast Wars cartoon
Rattrap was sent there on a recon mission by Optimus Primal, and was attacked by Terrorsaur. Shockingly, Rattrap surrendered to the Predacon, and agreed to obey him. This was later revealed to have part of a plan hatched by the Maximal spy and his leader.