My Camping Spots from “your maps” at Google
I store many locations of my found free camp sites on the web. The majority of sites come from freecampsites.net. Some are from a friendly librarian or a hospitable ranger given. Other travelers are usually generous with a few of their favorite spots.
This is an example of the Colorado free camping spots map.
For places that I have actually camped I use a ball point pen to circle the spot on the appropriate DeLorme map or the Benchmark map. One of these maps sit on the passenger seat every day, just in case I get turned around.
Extreme detail for geologic maps comes from the government geologic maps.
To get the wonderful National Forest Motor Vehicle map type in to Google “San Juan National Forest motor vehicle map“. I think that you can, through Avenza, download 3 of these MVU maps for free. The MVU Map shows you where you can camp for free with a few rules. I have used these maps extensively and found yummy places. The paper ones are all free and can be found in the local National Forest office. I have a shoe box full of these.
This free camp spot was found thanks to the MVU Map of the area.
Maps of public lands in the west can be found here.
If you are hunting a spot in a township try earthpoint, which uses Google Earth.
I am out of cell range so often that the paper maps are still my go to maps.