Minn. Stat. § 604A.23: OWNER'S LIABILITY.

An owner who gives written or oral permission for the use of the land for recreational purposes without charge does not by that action:

(1) extend any assurance that the land is safe for any purpose;

(2) confer upon the person the legal status of an invitee or licensee to whom a duty of care is owed; or

(3) assume responsibility for or incur liability for any injury to the person or property caused by an act or omission of the person.