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Cof Cymru: National Historic Assets of Wales · Wales

Alltwyllt Slate Quarry Incline

Llanfihangel-y-Pennant, Gwynedd, Wales

The record

Designation
Scheduled monument
Site type
Incline
Period
Post Medieval/Modern
Date of designation
30 August 2001
Community
Llanfihangel-y-Pennant
Unitary authority
Gwynedd
Country
Wales
Coordinates (centre of the scheduled area)
52.64075, -3.95015
SAM number
ME205
Cadw record number
3865

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David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1588 "Ortelius, Abraham: Theatro De La Tierra Universal. 0" (Bayerische Staatsbibliothek, Munich).

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This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Monument.

The monument comprises the remains of an exceptionally well preserved slate quarry incline, connected to the Talyllyn Railway, linking the terraces and workshops of Bryneglwys Quarry. The incline formation is revetted in stone and retains the double line of rails for much of its length and a set of points at the top where the incline joins the level track. The drumhouse is offset above the track on a large outcrop. It is slate built with a timber and slated roof. The cast iron and timber drum is intact, with a length of haulage cable and connecting rods to a brake lever at the incline top.

The monument is of national importance as a well preserved area within a slate quarry, which contains important evidence of slate quarrying, preparation, transport and infrastructure. Inclines may be part of a larger cluster of industrial monuments and their importance can be 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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