(Texas)
Lost Maples State Natural Area is a 2,906-acre (1,176 ha) area of hills and canyons on the upper Sabinal River in the Edwards Plateau Region of Texas. It is designated a Natural Area, rather than a State Park, which means the primary focus is the maintenance and protection of the property's natural state. Accordingly, access and recreational activities may be restricted if the Texas Parks & Wildlife Department (TPWD) deems such action necessary to protect the environment. (Ref: https://en.wikipedia.org/wiki/Lost_Maples_State_Natural_Area)