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Cof Cymru: National Historic Assets of Wales · Wales

Lefel Fawr Coal Adit

Ystradgynlais, Powys, Wales

The record

Designation
Scheduled monument
Site type
Coal Adit
Period
Post Medieval/Modern
Date of designation
18 September 1994
Community
Ystradgynlais
Unitary authority
Powys
Country
Wales
Coordinates (centre of the scheduled area)
51.79805, -3.71931
SAM number
BR201
Cadw record number
1811

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1608 "(13) Cambriae Typus." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Ancient Monument.

The monument consists of a well-preserved example of a rock-cut coal level of late 18th century date. The mine was opened in 1796 and was initially intended to become a boat-level, forming an underground branch of the Swansea Canal. The level is disused but is the route of a stream draining from underground. The entrance is covered by a metal grill.

The monument is of national importance for its potential to enhance and illustrate our knowledge and understanding of the development of the coal mining industry in Wales. It retains significant archaeological potential, with the strong possibility of the presence of associated archaeological features and deposits. A coal adit may be part of a larger cluster of industrial monuments and their importance can further enhanced by their group value.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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