This pass is your ticket to more than 2,000 throughout the U.S. It covers entrance fees at National Parks and National Wildlife Refuges, as well as standard amenity fees at National Forests, National Grasslands, and lands managed by the Bureau of Land Management and Bureau of Reclamation. Covers fees for a drive and all passengers in a personal vehicle at per-vehicle fee areas (or up to 4 adults at sites that charge per person).
Most Federal sites where Passes are accepted sell the Pass. Free passes will be given in person at local San Antonio Missions
To learn more go to https://store.usgs.gov/MilitaryPass