Gilwern Hill, Monmouthshire, Mountain summit in Monmouthshire, Wales.
Located within the Brecon Beacons National Park, Gilwern Hill rises to 441 meters and features distinct limestone formations along its eastern, northern, and western margins.
The limestone quarries surrounding Gilwern Hill played a central role in the regional iron and steel production during the industrial development of South Wales.
The hill serves as a designated Site of Special Scientific Interest, preserving geological formations that date back to the Carboniferous period for scientific study.
Multiple public footpaths and a restricted byway provide access to the northern and eastern slopes, while a minor road circles the southern and western edges.
The summit plateau contains specific rock layers including the Farewell Rock and Twrch Sandstone, which sit above extensive deposits of Carboniferous Limestone.
Elevation above the sea: 441 m
GPS coordinates: 51.80727,-3.09689
Latest update: March 17, 2025 19:52
The Blorenge
2.6 km
Monmouthshire and Brecon Canal
1.9 km
Blaenavon Iron Works
3.4 km
Clydach Gorge
1.8 km
Llanwenarth House
1.9 km
Clydach House
1.7 km
Smart's Bridge
1.7 km
Parish Church of St Elli
2.5 km
Llanwenarth Baptist Chapel
2.5 km
Ty-uchaf Farmhouse Including Yard Wall And Stile Between House And Barn Range
3 km
Blaen Pig quarries
2.3 km
Nant Dyar Railway Viaduct
1.2 km
Balance Tower, Blaenavon Ironworks
3.4 km
Bridge 102 over the Brecknock & Abergavenny Canal
2.1 km
Govilon Yard Bridge
2.9 km
Bridge 105 over the Brecknock & Abergavenny Canal including Iron Sign
2.4 km
Quarry Bridge
3.2 km
Llanwenarth Bridge
2.1 km
Three Arch Viaduct of former Merthyr, Tredegar and Abergavenny Railway
1.9 km
Bridge 107 over the Brecknock & Abergavenny Canal including Iron Sign
3.1 km
Cast House And Foundry, Blaenavon Ironworks
3.4 km
Limekilns at Auckland House
2.1 km
Bridge 106 over the Brecknock & Abergavenny Canal including Iron Sign
2.7 km
Bridge 101 over the Brecknock & Abergavenny Canal
2.1 km
Blast Furnaces, Blaenavon Ironworks
3.4 km
Railway Viaduct over Canal to SE of Govilon
2.6 km
Stack Square, Blaenavon Ironworks
3.5 km
Bethel Baptist Church
3.6 kmReviews
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