- Public land does not mean underground entry is allowed.
- Member condition reports are observations, not safety guarantees.
- Respect closures, private property, and land-manager rules.
- Historic mines may contain unstable ground, vertical drops, water, and bad air.
- This site does not provide entry techniques, bypass methods, or route-finding into closed workings.
- Exact gated coordinates are membership-restricted; Approximate Area markers may be intentionally displaced.
UndergroundMines.com provides historical and geographic reference information only. Abandoned mines may contain unstable ground, bad air, hidden shafts, explosives residue, flooding, and other lethal hazards. A listing or map marker is not permission to enter any property or underground working. This site does not authorize trespass, does not provide route finding into closed workings, and is not a substitute for landowner permission, agency regulations, or professional mine safety training.