Wyo. Stat. Ann. § 36-4-103

For the purposes of this act, outdoor recreation areas and facilities shall include state parks, public recreation grounds, historical parks, and historical, archaeological, geological and ecological sites now in existence or hereafter created. As used in this section, W.S. 36-4-105 and 36-4-108, "historical parks" includes all land and structures at South Pass City and Fort Fred Steele.