Cleyell

Cleyell was a colony world of the Unified Earth Government located in the Outer Colonies.

History
Despite evading the genocidal Covenant during the Great War, the colony was attacked in 2556 by a remnant of the former alien empire who subsequently glassed the entire surface with the exception of a single city. moved into orbit of Cleyell soon after to deploy Army and Marine search-and-rescue teams to relieve the stranded colonists on the surface.

Gallery
 File:Halo Escalation 17.jpg|Cleyell's surface is glassed. File:HE18 Cleyell Surface.jpg|A D79-TC Pelican flying over Cleyell's glassed surface. File:HE18-Tanaka&ODSTs.png|Tanaka and the ODSTs on Cleyell. File:HE18 Agri Stat.jpg|An agriculture station on Cleyell. File:HE18 Search.jpg|A cavern on Cleyell. 

List of appearances

 * Halo: Escalation