The Timekeepers constructed more-or-less standardized refuges scattered geographically and in deep time. These served as retreats for rest and recreation, as regrouping points, and as safe havens when an agent needed one. To assure that future archeologists would not find remains of the structures, they constructed the retreats on sites that would eventually undergo geologic catastrophe. Timekeepers located their Training Academy, for example, sixty-six million years ago, near what is now Chixulub, Mexico, the site of the dinosaur-killing meteor strike.
The organization kept the Refuges stocked with supplies, but they are also equipped with twenty-second century processors that can convert biomass to foodstuffs for humans. The refuges have automated defenses, not only to keep animals at bay but against the off-chance of attack by hostile time-traveling forces.
Haakon and Nathan spend time in a refuge similar to the one below.