From Halopedia, the Halo wiki
Zealot is a multiplayer map in Halo: Reach. It is set on the Covenant corvette, Ardent Prayer. It is made up of several levels, each easily accessible to the next through the use of ramps and gravity lifts. One section of the map, the third level which is separated by a shield that players can go through, but projectiles can not, is also exposed to the vacuum of space, in which sound effects are somewhat muffled,. In this area, gravity decreases, allowing players to jump further than in lower tiers. It is considered a spiritual successor to Halo 2's Midship.