Neath to Chepstow
One of the 96 hill-survey regions used by the Database of British & Irish Hills. Every hill we track in this region is listed below, tallest first — follow any name for its full record, live summit weather and daylight times.
- Hills listed
- 15
- Highest hill
- Craig y Llyn 600 m
- Mean height
- 547 m
- Marilyns
- 3
Access rights in this region
Conditional Right to roam in Wales: Right to roam only on mapped CRoW open access land —full Wales access guide.
This is the general position, not legal advice — local byelaws, seasonal restrictions and closures can override it. See the country-by-country access guide, or query an exact grid reference with the access checker.
All 15 hills, tallest first
| # | Hill | Height | Prominence | Classifications | Grid ref |
|---|---|---|---|---|---|
| 1 | Craig y Llyn | 600 m | 393 m | Historic County TopCurrent County/UA TopMarilyn+3 | SN906031 |
| 2 | Coety Mountain | 576.5 m | 226.5 m | Current County/UA TopMarilynHuMP+1 | SO231079 |
| 3 | Cefn Coch | 571 m | 36 m | Dewey | SO221093 |
| 4 | Werfa | 568 m | 88 m | Current County/UA TopDewey | SS912947 |
| 5 | Blorenge | 561 m | 134 m | HuMPDewey | SO269118 |
| 6 | Twyn Crugyrafan | 559 m | 33 m | Dewey | SS920954 |
| 7 | Mynydd Caerau | 555.3 m | 89.9 m | Dewey | SS890944 |
| 8 | Gwastad | 551 m | 47 m | Dewey | SO234054 |
| 9 | Mynydd Carn-y-cefn | 550 m | 176 m | MarilynHuMPDewey | SO187084 |
| 10 | Mynydd Ton | 539 m | 92 m | Dewey | SS947939 |
| 11 | Mynydd Blaengwynfi | 528 m | 38 m | Dewey | SS905973 |
| 12 | Mynydd Tynewydd | 518 m | 32 m | Dewey | SN936009 |
| 13 | Hirwaun Common | 515 m | 39 m | Dewey | SN942034 |
| 14 | Y Domen Fawr | 504 m | 135 m | HuMPDewey | SO166071 |
| 15 | Mynydd Ynyscorrwg | 502 m | 41 m | Dewey | SS887979 |
Hill data from the Database of British & Irish Hills v18.3 (CC BY 4.0). Prominence is the drop to the hill's key col; a dash means it is not recorded in our dataset.
Browse the other survey areas on the regions hub, check what you can do at a specific spot with the access checker, and read oursafety notes before heading up — hill days here can outlast daylight, especially in winter.