From Halopedia, the Halo wiki
The Carstolum River was a river on the planet, Carrow.
The Carstolum River once flowed southward for hundreds of kilometers through the Uldt Desert on Carrow, beginning in the Karfu Mountains to its north. At some point, it dried up, leaving only a dry bed. Gila Station was built near its headwaters.
List of appearances
- Halo: Envoy (First appearance) (dry bed)
- ^ a b Halo: Envoy Carrow map