Okla. Stat. tit. 2, § 2-16-71.4: Applicability of Sections 16-71.2 and 16-71.3 to duties

and liability of owner.

Unless otherwise agreed in writing, the provisions of Sections

16-71.2 and 16-71.3 of this title shall be deemed applicable to the

duties and liability of an owner of land which is used primarily for

farming or ranching activities, is on or adjoins land entered upon

the National Register of Historic Places and for which an easement

has been granted to the Oklahoma Historical Society, or is leased to

the state or any subdivision thereof for recreational purposes.