IIBryn-brith Situated at end of short track in remote moorland-edge location on eastern side of minor road leading north from Dinorwic to join the road from Deiniolen to Mynydd Llandegai; set in its own stone-wall
IICapel Bethel including railings to forecourt Situated towards south-western end of main village street near the point where it joins the B 4366; small forecourt in front has low rubblestone wall with slate coping, fleur-de-lys pointed iron raili
IICefn Braich Situated at southern end of Rhiwlas at junction between main road running through settlement, track running south-west and another leading north-east to Carreg y Garth; low rubblestone wall with iron
IIChurch of St Deiniol Situated in high isolated position off the B 4366 with only a few houses around in tiny settlement of Llanddeiniolen; set in roughly rectangular churchyard with roughly coursed rubblestone wall and si
IIDdol Situated in a large yard area with a modern bungalow to the north at the end of a short track running off the south-east side of the B4366, approximately 0.5km south-west of Bethel.
IIEglwys Crist (Christ Church) Situated in large roughly square-shaped churchyard approximately 0.5 km east of Deiniolen and 200m west of Cefn-y-Waen Chapel on north side of road from Deiniolen to Dinorwic; the church is aligned no
IIErw-pwll-y-glo On narrow lane north-west of the Afon Seiont about 0.8km north of Pont-rug with rubblestone wall to lane, continuing along track towards farmbuildings on south; railings to south of house on low curvi
II*Felin Sarn On S side of minor road through village, about 1km E of junction with B 4547.
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
IIFormer Mortuary Located immediately to the north-west of the former hospital at Dinorwic Slate Quarry on the edge of the levelled site.
IIFormer Railway Carriage Shed Situated immediately adjacent to minor track/road from Pont-Rhythallt to Brynrefail on the course of the former Padarn 4ft (1.22m) Gauge Railway north of the Afon Seiont approximately 400m east of the
IIGlasgoed Hall Situated to north of farmyard at end of track running north from minor road between Bethel/Saron and Penisa'r Waun; lawned area to north of house is site of former garden.
IIGriffith Family Monument Situated in the graveyard immediately to the rear of Capel Bethel near the chapel's north-western corner.
IIHafodty 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.
IIIncline 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
IILocomotive Shed 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
IILocomotive 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
IIMilestone Located on south side of the B 4366 approximately 0.5 km east of Bethel.
IIMilestone Situated on south side of the B 4366 approximately 0.5 km south-west of Bethel.
IIOffis 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
IIParc-y-garnedd Situated at end of short track in remote moorland-edge location on eastern side of minor road leading north from Dinorwic to join the road from Deiniolen to Mynydd Llandegai; set in its own stone-wall
IIPen y Clogwyn Situated in remote upland position in rocky landscape with small fields divided by drystone walls.
IIPen-y-Clip Situated at western end of Fachwen on wooded slope immediately by the side of the Brynrefail to Dinorwic Road on the north side of Llyn Padarn; there is a large rock outcrop immediately behind the cot
IIPont Penllyn (partly in Llanberis Community) Located at the north-western end of Llyn Padarn at the point where it is fed by the Afon Rythallt; the lake and river form the community boundary between Llanberis and Llanddeiniolen.
IIQuarryworkers' 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
IITan y Graig Situated on wooded slope off west side of track leading down from the Brynrefail to Dinorwic Road towards the former slate quarry on the north side of Llyn Padarn; low rubblestone wall in front of cot
IITanybryn Located on eastern side of road leading from Dinorwic to the Dinorwic Slate Quarry; dry slate slab wall to front with vertical slate slabs as piers to decorative iron gates.
IITros-y-gonfa Situated at south-west end of Chapel Street where narrow path turns at right-angles to run up hillside to meet Stryd Uchaf; small cottage garden enclosed by low rubblestone wall with painted picket f
IITy'n-fawnog Situated on north-west side of cross roads at Dinorwic approximately 100m north-west of the Presbyterian church; skilfully executed dry slate slab wall to road frontage.
IITyddyn-y-berth Situated at end of farm track amongst fields on east side of minor road between Llanrug and Bethel; its farmbuildings (not included on this list) lie immediately to the south.
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