Underground mine map
Sign in to explore the interactive, filterable mine map. Markers show documented underground mines only — exact coordinates always remain gated by membership tier.
Sign in to view the interactive map
Create a free account or sign in to filter, cluster, and explore documented underground mines by state, commodity, and verification status.
Map legend
- Unconfirmed — catalog-eligible, not independently verified by UndergroundMines.
- Verified — independently verified (member and/or admin confirmation).
- Community Mine — community-submitted underground record (after moderation).
- Approximate Area — intentionally displaced privacy-offset marker; not the exact coordinate.
- Mixed Underground/Surface — source documents both surface and underground work.
Approximate Area markers are intentionally displaced for privacy where applicable. Exact community locations remain protected.
Shareable map URLs may include filters such as ?state=CA&commodity=gold&verification=unconfirmed — never exact protected coordinates.