Mynydd Twyn-glas, Mountain summit in Caerphilly County Borough, United Kingdom
Mynydd Twyn-glas rises to 472 meters above sea level, featuring steep slopes covered with dense conifer plantations and a broad plateau at its peak.
The mountain's geological formation dates back to the late Carboniferous Period, with notable coal seams including the Cefn Glas and Brithdir deposits along its eastern flanks.
The Welsh name Mynydd Twyn-glas translates to 'hill of the blue knoll', reflecting the traditional Welsh practice of naming geographical features based on their physical characteristics.
Access to the summit is guaranteed through the Countryside and Rights of Way Act 2000, with multiple public footpaths connecting to neighboring towns and villages.
The mountain contains a significant landslip at Mynydd Henllys and features two distinct knolls near the summit, positioned higher than the base of the trig point.
Location: Caerphilly County Borough
Elevation above the sea: 472 m
GPS coordinates: 51.67420,-3.07160
Latest update: March 17, 2025 19:54
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