# ANH ArcGIS — geovisor.anh.gov.co
## National Hydrocarbons Agency
## SEVERITY: CRITICAL

**Endpoint**: https://geovisor.anh.gov.co/server/rest/services
**Version**: ArcGIS Enterprise 11.1
**Auth**: NONE REQUIRED
**Dump Size**: 614MB, 124 files

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## Contents

7 folders + 5 root services — Colombia's hydrocarbon infrastructure

### Oil & Gas Wells (Pozos)
- **27,274 wells** with GPS coordinates (16MB)
- Includes well type, status, operator, depth, and production data

### Seismic Surveys
- **Sísmica 2D**: 19,409 line features (survey tracks)
- **Sísmica 3D**: 450 polygon features (survey areas)

### Sedimentary Basins
- **24 basins** — Complete sedimentary basin boundaries (11MB)
- Cuencas_Sedimentarias_de_Colombia

### Hydrocarbon Exploration Studies
- **VEstudios_ANH**: 11,042 features (292MB) — Full exploration studies database

### Land Parcels (Tierras) — Historical Timeline
Current + 16 historical snapshots (2018-2025):
- Tierras 2025-12-29: 486 parcels (latest)
- Tierras 2025-10-06: 488 parcels
- Tierras 2025-06-17: 495 parcels
- Tierras 2025-02-14: 486 parcels
- ...back to Tierras 2004-12-31: 221 parcels

### Historical Tierras (pre-2018)
- 16 more snapshots (2004-2017) showing evolution of hydrocarbon land allocation
- From 221 parcels (2004) growing to 900 parcels (2017)

### Other
- **Rezumaderos**: 1,194 oil seeps/natural surface manifestations
- **Coal mines**: 27 active coal mines
- **Yacimientos**: 833 deposits (14MB)
- **Raster footprints**: 243 features
- **Department boundaries**: 33 departments (34MB)
- **Municipality boundaries**: 1,123 municipalities

## Folders
```
Cruces_Socioambientales/  Estudios_VT/
GEOVISOR_v32/  Hosted/  Pozos3D/
pruebaimagen/  test/  Yacimientos/
```