Big Horn River
The Spartan-IIs used the river for training exercises, as they knew the terrain well and could navigate it easily. During the Battle of Reach, a Covenant invasion force of more than ten thousand ground troops, supported by a Covenant cruiser hovering overhead, landed, and set up camp, near the Big Horn River. A section of the Big Horn River was evaporated during the Battle of Reach, when Spartans Fred-104, Kelly-087, and Joshua-029 destroyed the invasion force and the Cruiser using a Fury Tactical Nuclear Weapon.
List of appearances
- Halo: The Fall of Reach (First appearance)
- Halo: First Strike (Mentioned only)
- Halo: Reach
- Halo: Fall of Reach
- Halo: The Fall of Reach - The Animated Series