That would be maps like USGS Quadrangles and USFS National Forest maps. The forest service maps tend to have said 'recreation' data like campgrounds and trailheads. The quad maps will be at smaller scale, like 1:24000), and have more topographical detail that you can use to find peaks, valleys and wet areas.

Grab an app line Gaia GPS or my tool of choice, Avenza. You can download maps for offline use and venture away from cell service.

Amazing, Thanks