As used in this chapter, unless the context requires a different meaning: “Authority” means the Southwest Regional Recreation Authority, a body politic and corporate, created, organized, and operated pursuant to the provisions of this chapter or, if such Authority is abolished, the board, body, authority, department, or officer succeeding to the principal functions thereof or to whom the powers given by this chapter are given by law. “Board” means the board of the Southwest Regional Recreation Authority established pursuant to § 15.2-6018. “Land” includes roads, water, watercourses, private ways and buildings, structures, and machinery or equipment thereon when attached to the realty. “Owner” includes tenant, lessee, occupant, or person in control of the premises. “Recreational purposes” includes any one or any combination of the following recreational activities: hunting, fishing, swimming, boating, camping, picnicking, hiking, pleasure driving, motorcycle or all-terrain vehicle riding, bicycling, horseback riding, nature study, water skiing, winter sports, and visiting, viewing or enjoying historical, archaeological, scenic, or scientific sites or otherwise using land for purposes of the user. “Southwest Regional Recreation Area” means a system of recreational trails and appurtenant facilities, including trail-head centers, parking areas, camping facilities, picnic areas, recreational areas, historic or cultural interpretive sites, and other facilities that are a part of the system.