Maps for Climbers
- CalTopo
- Rockd makes geologic info accessible. It's good for information about the rock-type of a particular crag, or for discovering rocks exposures. There are also apps available.
- The Bureau of Land Managment has some of the more permissive Recreation Opportunities
- Forest Service
- From the The USGS
- The National Map and it's intro page
- For custom, printable topographic maps topoBuilder is quick, easy, and free.
- HeyWhatsThat is a fun explorer for checking horizon visibility.
- AcreValue offers land-ownership maps. Outside of your local government offices, it's one of the better ways to find out who owns land that rocks are on.
- Bing Maps has better rural satellite resolution than other big map providers. In some regions, it offers oblique imagery, available as "birds eye"; this is about as good as it gets for boulder hunting on satellite images.
- Vexcel Imaging and EagleView are paid services but if you can get access, their imagery is about as good as you can get.
- OpenStreetMap
- Free Campsites is what it sounds like and little more.
building maps
- https://leaflet-extras.github.io/leaflet-providers/preview/
- http://geojson.io/