Henllys Vale Colliery Chimney is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 26 September 1994. Chimney.
Henllys Vale Colliery Chimney
- WRENN ID
- roaming-oriel-ochre
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Caerfyrddin MP: Ann Davies (PC)
- Country
- Wales
- Date first listed
- 26 September 1994
- Type
- Chimney
- Address
- Henllys Vale Colliery Chimney, Ystradowen, Swansea, Quarter Bach, Carmarthenshire
- OS grid reference
- SN 762 137
- Coordinates
- 51.80838, -3.79682
- Source
- Cadw listing
Description
Henllys Vale Colliery Chimney is a notable structure, standing over 30 meters high. It features a circular shaft set on an octagonal base. The chimney is constructed of red brick in various shades, with alternating courses of headers and stretchers creating a banded effect. The octagonal base rises to approximately 3 meters and includes an archway on the south side for a flue. The chimney shaft tapers gradually, culminating in a corbelled ring at the top.
Local climate
Henllys Vale Colliery Chimney sits in one of the wettest parts of the UK, with an average of 1,490 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 95% of listed buildings.
It experiences an average of 43 freeze-thaw cycles a year, more than 81% of listed buildings. Of these, 21 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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