The federal record (USGS MRDS) lists 24 gold occurrences in Costilla County — 13 of them past or active producers. Below is that record, readable: the documented sites, and the live map that puts claims, creeks, roads and geology under every one of them.
Open the Costilla County gold map → Membership — first week free
Producers first, then prospects and occurrences — each links into the live map of that exact ground:
| Site | Status | Type |
|---|---|---|
| Badger State Placers 1-5 | Past producer | placer |
| Denver Placers 6-8 | Past producer | placer |
| El Plomo Mine | Past producer | vein |
| El Plomo District | Past producer | — |
| Giant Gulch Placer | Past producer | placer |
| Last Chance Placer | Past producer | placer |
| Monte Christo Mine | Past producer | vein |
| Mountain View Mine | Past producer | breccia pipe |
| Otero Placers 1 and 2 | Past producer | placer |
| Placer | Past producer | placer |
| San Luis Mine | Past producer | flat vein system |
| Spanish Basin Placer Co. Claims | Past producer | placer |
| Willow Gulch Placer | Past producer | placer |
| Climax Tunnel | Prospect | — |
| Copper King Claim | Prospect | — |
| Excelsior Tunnel | Prospect | vein |
| Hidden Treasure Claim | Prospect | vein |
| Lizzie G. Group | Prospect | — |
| Magnolia Group | Prospect | — |
| Mamarth Claim | Prospect | fissure vein |
| Merrimac Claim | Occurrence | — |
| Millie G. Claim | Prospect | — |
| Paul H. and Daisy Claims | Prospect | — |
| Rock and Rye Claim | Prospect | — |
The free map shows every dot above. Membership opens the layers that turn dots into a plan — favorability at working zoom, active claims, land ownership, geology and the creeks that drain the known sources. The first 7 days are free.
The dots are the record. The method is how you read them: