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Reskolah was a region on Janjur Qom, the San'Shyuum homeworld. The grotto of the Great Transition was located in the southeastern edge of the region. The Stoic village of Crellum and a dense jungle was also located in the region. Reskolah was rumored to have contained numerous undiscovered Forerunner relics. Mken 'Scre'ah'ben had studied the area and knew a great deal about Reskolah's topography and history. San'Shyuum females in the region sewn home symbols of Reskolah on their robes.
In 850 BCE, Mken led an expedition to the region for the Ministry of Anticipatory Security, under the orders of the Hierarchs. The team arrived at the grotto and upon retrieving the Forerunner Luminary and a device within the grotto, Mken was betrayed by an agent of the Ministry. However, Stoic warriors attacked the group and killed the traitors, while Mken and the survivors fled. After, the survivors made their way to the village of Crellum to retrieve a group of San'Shyuum females that willingly wished to travel to High Charity—largely due to the lack of young males in southeast Reskolah—to help increase genetic diversity. Although the group was attacked by Stoic soldiers and their folasteed mounts in a jungle in Reskolah, they were able to escape the planet and return to High Charity.
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