Access, or easement.....
There is a specific area in western Wyoming that I hunt that I could only access from the top of the mountain, (or so I thought) as the bottom was all private, with no public access. Not a huge deal, as I'm not afraid to do what I have to do, but the climb back up that mountain is not a fun one, especially with a load. Then I found GPS Huntmaps, and first used the computer based version, which showed a two track road, that is an access point to national forest, that I never knew was there, or assumed it was private as well. I then purchased the chip for my gps. To me, this is an invaluable tool for all aspects of hunting, or any other outdoor activity. As a side note, one of my friends was hunting antelope over by Casper, found a buck he wanted to harvest, but the land was posted "no trespassing" , his gps said it was BLM and state land, so he called G&F. They came and investigated, using the same method, gps with maps chip, and found it to be public land. Come to find out, an outfitter was trying to pull a fast one.
I believe this could help with your endeavor to find access,
Jbo