Valhalla

From MLGWiki

A large, outdoor map featuring sprawling hills and lush, mountainous terrain, Valhalla is the spiritual successor to Blood Gulch. Two Bases on opposite ends of the map gives some symmetry to this level. Each base includes a Sniper Rifle and a Man Cannon to launch to the middle, where opponents will fight for control of a Spartan Laser that sits at the top of a hill in the middle of the map.

One base is near a waterfall and the river it creates leads to the lake behind the other base.