| With hundreds of human colonies now razed in the wake of the Covenant War, the UNSC has dispatched large numbers of advanced pioneer groups to survey potential new worlds. The discovery of Eudemon X49-05 was considered lucky, but concerns remain about the moon’s structural integrity. |
Erosion is a large map with multiple sections that is one of the three main Forge maps in Halo 4. There is an out door area that is good for asymetrical objective game types. The DMR and Light Rifle are useful weapons for this map and the Thruster Pack can help you go from cover to cover as you make your way up to the top.
The other major section of the map is an arena style room that can be used for Grifball matches and symetrical gameplay. This area is only generally used for player made maps and will change depending on the set up.

