From Halopedia, the Halo wiki
Ah'lomet is one of the two supercontinents, the other being Ruuht, on the Kig-Yar homeworld of Eayn. The Kig-Yar are believed to have evolved from a saurian species on the continent. During the ancient Kig-Yar gladiatorial era, Kig-Yar would hold inter-clan physical combat competitions in the largest population centers on the continent. The pseudo-governments of Eayn that have administrative control of the two continents often held divergent opinions about which continent controls the smaller islands between the two. This was an attempt by the continent's "government" to ensure that Ah'lomet was Eayn's largest land mass.