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Locomotive Shed

A Grade II Listed Building in Llanddeiniolen, Gwynedd

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Latitude: 53.1218 / 53°7'18"N

Longitude: -4.1141 / 4°6'50"W

OS Eastings: 258624

OS Northings: 360380

OS Grid: SH586603

Mapcode National: GBR 5Q.7944

Mapcode Global: WH54M.SS3M

Entry Name: Locomotive Shed

Listing Date: 4 November 1999

Last Amended: 4 November 1999

Grade: II

Source: Cadw

Source ID: 22657

Building Class: Transport

Location: Situated to the north-east of the former Dinorwic Slate Quarry Workshops, the locomotive shed is located immediately north of the entrance to the Glan-y-Bala tunnel which once provided a connection to

County: Gwynedd

Town: Caernarfon

Community: Llanddeiniolen

Community: Llanddeiniolen

Locality: Gilfach Ddu

Traditional County: Caernarfonshire

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Built in the late C19 to serve as a locomotive shed on the Padarn 4ft (1.22m) gauge railway, which opened in 1843 to transport slate from the Dinorwic Quarry to Port Dinorwic. This particular shed appears to have housed the locomotive which passed through the Glan-y-Bala tunnel to connect with the south-eastern area of the quarry until tipping allowed the line to be relaid around the bluff. The lean-to on the north gable end appears to be a later addition.


Long rectangular-plan high single-storey structure with lean-to addition on north gable end. Main building of snecked rock-faced rubblestone with slate-stone quoins; dressed slate-stone slabs to lean-to; slate roof with long gabled ventilated louvre to ridge of main shed; banded slates on lean-to. Long west wall of shed has 3 tall round-headed decorated cast-iron windows (of very similar pattern to those in Quarry Workshops) with tightly jointed pointed slate voussoirs and slate cills; integral slate-stone stack with moulded capping to north. South gable end has pointed doorway for locomotive with dressed slate voussoirs; lean-to on north has window to west and doorway on north.


Interior not accessible at time of Survey.

Reasons for Listing

Included as a well-preserved example of a late C19 4ft (1.22m) gauge locomotive shed of some architectural distinction on the old Padarn Railway, having strong group value with related quarry structures at the former Dinorwic Slate Quarry.

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Other nearby listed buildings

  • II Offis Fawr (now Woodcraft Centre)
    Located immediately to the east end of the north range of the former Dinorwic Slate Quarry workshop complex, the building is situated high above the workshops on a quarried outcrop; flight of slate st
  • I Dinorwic Slate Quarry Workshops (Welsh Slate Museum Buildings)
    Located at the south-east end of Llyn Padarn to the east of Llanberis, the quarry workshops sit at the foot of the vast workings of the former Dinorwic Slate Quarry; the immediately surrounding land i
  • II Incline, Drumhouses and Counter Balances ('A' Incline)
    Incline rising steeply to the north-east of the former Dinorwic Slate Quarry Workshops, running initially south-eastwards and then just to the south-west of the former quarryworkers' barracks turning
  • II Incline and Drumhouses
    Incline and drumhouses rising from the old floor (now car park of the Welsh Slate Museum) to the top level of the former Vivian Slate Quarry; massive slate retaining wall located immediately to the no
  • II Locomotive Shed
    Situated to the north-west of the former Dinorwic Slate Quarry Workshops, immediately alongside the former Padarn Railway (now the Llanberis Lake Railway) between the old quarry hospital and the moder
  • II Quarryworkers' Barracks
    Spectacularly and now remotely located off the 'A' Incline of the Dinorwic Slate Quarry just north of the point where it turns abruptly to the north-east; the path between the 2 rows of barracks runs
  • II Hafodty
    Situated in remote wooded position at the end of a driveway leading off the track/road leading down from Dinorwic to Llanberis; driveway has drystone slate slab wall with slab-on-edge coping.
  • II* Former Hospital and boundary walls
    Situated on level site above the north-east side of Llyn Padarn with spectacular mountain views; lies to north-west of the slate museum from which it is reached by a long drive; also approached over C

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