Wall Climbing with Vehicles

Introduction
In Halo 2 if you take a Ghost, Spectre or Wraith you can climb walls using their Boost. This is helpful to get to high areas you can't reach on foot. The cliffs you can get up to are great for using the Sniper Rifle. There may be other maps that you can do this in, but have not been discovered yet.

Vehicle that can climb walls

 * 1) Ghost
 * 2) Spectre
 * 3) Wraith

What Makes the Vehicles able to Climb?
The reason these vehicles can climb walls is because they hover and can use boost. If a Warthog tried climbing the wall, it would fall back because it is too steep. The Ghost, for example, can climb because there are no wheels and the hover lifts it up and with its boost, which helps.

How to Climb a Wall in Coagulation
To climb a wall in Coagulation, you will need one of the aforementioned vehicles. After you got one, look for a slanted part of the rock wall that makes Coagulation Valley and use the vehicles boost to climb the wall. This is helpful to get to high areas you can't reach on foot. The cliffs you can get up to are great for using the Sniper Rifle.

How to Climb a Wall in Burial Mounds
In Burial Mounds, around the back side of the map, there is a hill that runs along the map. If you use a Ghost, you can climb it. It is a great sniping spot.