The Chronicle was colorful mosaics that decorated the interior of the Prime Chamber in the Killik Colony on the planet Yoggoy. According to Mara Jade Skywalker, one could not look directly at the Chronicle to obtain its details, the Chronicle was like one of those air-jellies on Bespin, it only showed up when one looked away.
It detailed the crash of the Tachyon Flier on Yoggoy; the Killiks waiting Raynar Thul to die; how Raynar touched the Killiks in the Force which made the insects to care for him; the healing and transformation of Raynar to a Joiner; the change of the Yoggoy nest and the creation of the Unu hive; and finally how the Colony defeated a rebelling nest.
When the Skywalker couple, the Solo couple and Saba Sebatyne went to Yoggoy to investigate the disappearance of Myrkr strike team survivors in 35 ABY, UnuThul showed the Chronicle to the group when Leia Organa Solo asked for the details.
The Chronicle was presumed abandoned with the Prime Chamber after the Qoribu Truce.