| Site Name | Area | Last Modified |
|---|---|---|
| ROMAN RAKE | Mendip | 11 May 2008 |
| ROD’S POT | Mendip | 01 Jan 2005 |
| ROCKET DROP CAVE | Mendip | 01 Jan 2005 |
| RICKFORD FARM CAVE | Mendip | 01 Jan 2005 |
| RHINO RIFT | Mendip | 21 Nov 2023 |
| REYNOLD’S RIFT | Mendip | 01 Jan 2005 |
| RESERVOIR HOLE | Mendip | 13 Jan 2023 |
| REDCLIFFE CAVES | The Caves of Bristol | 05 Jun 2020 |
| READ’S GROTTO | Mendip | 21 Nov 2023 |
| READ’S CAVERN | Mendip | 01 Jan 2005 |