Roland spoil heap
Thermally inactive
Coal heap (contains coal remains)
3.19
ha
50.8
m height
Layers
- Heap status
- Inactive
- Reclamation
- Fully reclaimed
- Thermal activity status
- Thermally inactive
RVR.
District Government of Cologne. Digital Terrain Model (DGM1m) [online]. https://www.bezreg-koeln.nrw.de/geobasis-nrw/produkte-und-dienste/hoehenmodelle/digitale-gelaendemodelle/digitales-gelaendemodell
Online source. Available at: https://www.rvr.ruhr/fileadmin/user_upload/01_RVR_Home/08_Presse/Pressemeldungen_RVR/2025/07_2025/20250527_GRHK-red.pdf
Information data quality:
High – On-site measurements, official documentation, professional studies, drone/UAV surveys, laboratory analysis, direct interviews, government databases
Geometric data accuracy:
High – GPS/GNSS field survey (RTK/PPK), drone survey, LiDAR scanning, cadastral survey, total station