A cluster of five rustic cabins (B-1, B-3, B-6, B-7, B-8) tucked in the forest near Mill Lake, right by the Gerald E. Eddy Discovery Center. Each cabin offers bunk beds, a table, and wood stove heating, with fire rings and picnic tables outside. Vault toilets and a water pump are nearby, and guests bring their own bedding and gear. Quiet and secluded, these cabins make an excellent overnight stop directly along the Waterloo–Pinckney Trail.