Wyo. Stat. § 34-19-105: When landowner's liability not limited.

(a) Nothing in this act limits in any way any liability which otherwise exists:

(i) For willful or malicious failure to guard or warn against a dangerous condition, use, structure, or activity, except an owner whose land is adjacent to a national scenic trail designated by the United States congress and who has conveyed an easement across his lands for purposes of a designated national scenic trail shall owe no duty of care to keep the adjacent lands safe or to give any warning of a dangerous condition, use, structure or activity on the adjacent lands. The installation of a sign, other form of warning or modification made to improve safety shall not create liability on the part of an owner of the adjacent land if there is no other basis for liability;

(ii) For injury suffered in any case where the owner of land charges the persons who enter or go on the land for recreational purposes, except that in the case of land leased to the state or a subdivision of this state, any consideration received by the owner for the lease shall not be deemed a charge within the meaning of this section;

(iii) Under W.S. 1-39-107.