Phoenix Logs/Multiplayer Maps/Frontier
From Halopedia, the Halo wiki
Verdant grasslands overrun a Forerunner facility suspended on the edge of the world.
A clash of familiar and alien environments characterize this battlefield; lush grassland and sandy beaches are punctuated by several monolithic Forerunner structures, creating unnatural 'islands' among the landscape. The sleek but complex designs of the Forerunner ramps and lightbridges that branch off from these islands form multiple paths over the natural chasms of the environment as factions clash to gain control over valuable Forerunner resources.