Geology for ELR SSS is based on British Geological Survey (BGS) low-resolution data sampled at 100 metre intervals along the ELR. The geology presented should not be treated as accurate or complete. Data marked with Ⓤ is classed as undifferentiated by the BGS.
| Mileage | Material | Deposit | Bedrock |
|---|---|---|---|
| 3M 0977y to 4M 1045y | Pridoli Rocks Ⓤ - Mudstone, Siltstone and Sandstone | ||
| 4M 1045y to 4M 1342y |