From Halopedia, the Halo wiki
In October of 2558, shortly before the Battle of Sunaion, Kholat recorded an anthropological linguistics report detailing his study of ancient Sangheili glyphs found throughout the historic ruins of Nuusra. He longed to relearn his species' history which had been left lost in a haze of lies and myth as a result of the Covenant. Despite being hindered by eroded and half-ruined glyphs, Kholat was willing to study them there for many years.
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