Surface ground movements
The South Wales Valleys are naturally prone to ground movements due to their steep terrain, layered geology, and high rainfall. Landslips — also known as landslides — have occurred here throughout history, often triggered by intense rainfall, changing groundwater levels or gradual erosion.
For more information and detailed records, visit the National Landslide Database – British Geological Survey
Coal Tips in RCT
Rhondda Cynon Taf (RCT) is home to a number of disused colliery spoil tips, remnants of the region’s rich mining heritage. The Council plays a vital role in maintaining these tips to ensure public safety and environmental stability. This includes regular inspections, risk assessments, and maintenance works such as drainage improvements and vegetation management.
However, not all tips are owned by RCT. Some are the responsibility of:
- Private landowners
- The Mining Remediation Authority
- Other public bodies
Each owner is legally responsible for monitoring the condition of their tips, carrying out necessary maintenance, and reporting any signs of instability. RCT works collaboratively with these stakeholders to ensure a coordinated approach to tip safety across the borough.
Useful Links
- Disused Coal Tips Map – DataMapWales
- Coal Tip Safety Taskforce – Welsh Government
Reporting a Landslip or Tip Concern
If you witness a landslip or suspect ground movement near a coal tip:
Call 999 immediately if there is danger to life or property.
Contact RCT Council:
- Customer Contact Centre: 01443 425001 (8:30AM – 5PM, Monday – Friday)
- Emergency Line (Out of Hours): 01443 425011
For coal mine hazards only call the Mining Remediation Authority on 0800 288 4242
When reporting, please provide:
- Exact location (address, What3Word location or nearby landmarks)
- Time and date of the incident
- Description of what you saw (e.g. cracks, movement, flooding)
- Photos or videos if safe to capture
- Your contact details for follow-up