Code of Federal Regulations Title 43. Public Lands:  Interior § 43.21.2 Scope of regulations

The provisions of this part apply to all recreation or conservation areas administered by the Department of the Interior, including recreation or conservation areas leased or transferred for administration to other Federal and non-Federal public agencies, wherever the Department of the Interior retains jurisdiction over the issuance of cabin site permits by such other agencies. The provisions of this part do not modify or cancel any existing arrangement whereby the Department of the Interior or bureau or office thereof has leased, or turned over for administration, a public recreation or conservation area to another Federal or non-Federal public agency. The provisions of this part will also provide policy guidelines for the Departmental handling of assignments, amendments, or modifications of existing permits or agreements, but do not apply to areas transferred by deed where the United States retains a reversionary interest, nor to areas of the National Park System other than those where private cabin sites are located.