36 C.F.R. § 18.3 What property may be leased?
Title 36 - Parks, Forests, and Public Property
(a) In general. The Director may lease any property (except non-historic land) under this part if the Director makes the determinations required by §18.4. (b) Non-historic land. Non-historic land may not be leased under this part. Certain non-historic land is eligible for leasing under 36 CFR part 17.
Title 36: Parks, Forests, and Public Property
PART 18—LEASING OF PROPERTIES IN PARK AREAS
§ 18.3 What property may be leased?

