Limekilns at Blackrock Limeworks, including Loading-ramp is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 27 July 2000. Limekiln.

Limekilns at Blackrock Limeworks, including Loading-ramp

WRENN ID
sunken-rubblework-quill
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Monmouthshire MP: Catherine Fookes (Lab)
Country
Wales
Date first listed
27 July 2000
Type
Limekiln
Address
Limekilns at Blackrock Limeworks, including Loading-ramp, Llanelly, Monmouthshire
OS grid reference
SO 218 127
Coordinates
51.80786, -3.13544
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The limekilns at Blackrock Limeworks consist of a large rectangular kiln with battered walls and a smaller kiln set back to the right. They are constructed from rock-faced limestone, with the left side built into the rock face. The main kiln features two round-headed drawing arches, each with arch-rings made of three red brick header courses. Inside, there are well-preserved brick vaults; the left kiln has a wide stoking hole, while the right kiln has small paired stoking holes and brick-lined crucibles. In front, there are remains of a low stone-faced platform. The smaller kiln to the right has a similar drawing arch. Adjacent to the right is a cranked retaining wall for the loading ramp, which extends approximately 50 meters and follows the line of the quarry face.

Local climate

Limekilns at Blackrock Limeworks, including Loading-ramp sits in a wetter-than-average part of the UK, with an average of 1,040 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 75% of listed buildings.

It experiences an average of 48 freeze-thaw cycles a year, more than 89% of listed buildings. Of these, 24 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.

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