Old mines can have open shafts and are often on active claims or private land — look, don't collect, unless you know it's open.
Pins
Mining claims (BLM)
Tells you if claims are recorded in the block you're looking at — BLM only locates claims to 40–640 acre blocks, so they aren't drawn. Data as of …; new claims can take 90 days to appear. Collecting on an active claim without permission is off-limits.
Who manages the land
Source: BLM Surface Management Agency, pulled . Not a survey; boundaries can be off by tens of meters — check signs on the ground.
Your pins
Backup
Pins and photos are saved only on this phone. Deleting the app erases them — save a backup now and then.
Offline Nevada
Download the land layer, road map, names, mines and claims (~235 MB) so the app works with no signal. Do this on Wi-Fi.