Tunnel carrying Brynich stream under Brecon & Abergavenny Canal (partly in Brecon community)

Chartist Cave
Underfoot Expounder

Dan yr Ogof
Underfoot Expounder

Llywelyn's Cave
Underfoot Expounder

Ogof Agen Allwedd

Ogof Craig a Ffynnon

Ogof Draenen

Ogof Ffynnon Ddu

Ogof y Daren Cilau

Porth yr Ogof

Aberaman Colliery

Abercwmboi Colliery

Aberdare Merthyr Colliery

Abergwawr Colliery

Aberpergwm Mine

Abertillery New Mine

Bedlinog Colliery

Bedwlwyn Colliery

Beynon's Pit

Big Pit Coal Mine, Blaenavon

Black Pins early ironstone workings

Blaenavon Upper Brick Yard

Blaen-nant Colliery III

Blaen-nant Colliery

Blaen Pig quarries

Bryncoch Colliery

Bryn Defaid Coal Mine

Bryn Defaid Mining Remains

Bryn Pyllog, Opencast Mine

Budd's Rock Colliery

Bwllfa Colliery

Carno Pit

Castle Pit

Cefn Brithdir Colliery

Clydach Coal Level

Coal and Iron Ore Workings West of Abergavenny Road, Blaenavon

Coalbrookvale Coal Mine, Sw Of Nantyglo

Coedcae Cendl, Coal Level I

Coed-Mawr quarry

Coetgae, Abertillery, Former Opencast Mine

Coity Sandstone Quarry and Incline

Colliery

Cribarth Limestone Quarries and Tramroads

Cwmbargoed Colliery

Cwm-bargoed Pits

Cwmcynon Colliery

Cwm Cynon Colliery

Cwmdare Colliery

Cwmfelin Drift

Cwm-glo Pit Coal Level

Cwm Mawr Coal Level, Bft

Cwmneol Colliery, Cwmaman

Cwm Pit and head of railway

Cwm Pit Colliery, Abercanaid

Cwmsychan Red Ash Colliery, Abersychan

Cwmtillery Colliery

Cwn Nant Melyn Coal Mine

Dan-y-deri Colliery

Deep Dyffryn Colliery

Deri Colliery

Dowlais Top, Open Cast Mine

Drum Colliery, Bft 3.1

Drum Colliery, Coal Level 3, B

Drum Colliery, Level 1, Bft (3

Drum Colliery, Level 2, Bft (3

Drum Colliery, Shaft 1, Bft 3.

Drum Colliery, Shaft 2, Bft 3.

Drum Colliery, Shaft 3, Bft 3.

Dunraven Adare Colliery

Dyllas 1905 Coal Level I

Dyllas Colliery

Elliot Colliery, New Tredegar

Elliots Colliery

Engine Pit, Blaenavon

Fforchaman Colliery

Fforchwen Coal Mine

Ffos-y-fran

Fochrhiw Pits

Fochriw Colliery

Fochriw, Opencast Mine

Four Feet Pit

Gadlys New Pit

Gadlys Old Pit

Garth Bank Quarry

Gelligaer Coal And Ironstone

Gelligaer Coal And Iron Stone

Gelligaer quarry

George Colliery

Gethin Pit No.1, Abercanaid

Gethin Pit No.2, Abercanaid

Glyn-dyrys Pit

Glyn-dyrys Pits Level Ii

Glyn-dyrys Pits Level I

Glyn-dyrys Upper Level

Glyn-dyrys Upper Pit

Golynos Coal Shaft

Gorllwyn Level

Graig 1 Coal Pits

Graig Coal Pits, Pentrebach

Graig Colliery & Brick Works, Air Shaft

Graig Colliery & Brick Works, Coal Level Ii

Graig Colliery & Brick Works, Coal Level

Graig Colliery & Brick Works, Drift Mine

Graig Colliery & Brick Works

Graig Colliery

Gray's Colliery

Groes-faen Colliery

Heol-ddu Colliery

High Dyffryn Colliery

Hill Pits, Blaenavon

Hill Pits, Mining Remains

Iron and coal patching at Pen-ffordd-goch, Blaenafon

Iron Ore Scours and Patch Workings at Winch Fawr, Merthyr Tydfil

Ironstone Quarries at Carreg Maen Taro

Isaac Morgan's Pit, Merthyr Tydfil

Lefel Fawr Colliery, Abercraf

Llethr Las, Coal Level Iii

Llethr Las, Coal Level Ii

Llethr Las, Coal Level I

Llethr Las, Coal Level Iv

Llethr Las, Coal Level Vii

Llethr Las, Coal Level Vi

Llethr Las, Coal Level V

Llethr Las, Pit

Llety-shenkin Colliery (upper)

Llwynhelig Colliery

Locomotive Type Steam Boiler, Blaen Rhondda

Lower Colliers Level Iii

Lower Colliers Level Ii

Lower Colliers Level I

Lower Colliers Post-1905 Level

Lower Duffryn Pit, Cwmpennar

Lower Dyffryn Colliery - Lower

Lower Dyffryn Colliery - Upper

Lower Varteg Colliery

Maclaren Colliery, Abertysswg

Maclaren Colliery

Maerdy Collieries: No.3 Pit And No.4 Pit, Maerdy

Maerdy Collieries No 3 Pit, Building Base

Maerdy Colliery

Marine Colliery, Cwm

Marine Colliery Pumping Engine

Markham Colliery

Marquess Red Ash Colliery, Blaenavon

Merthyrdare

Middle Dyffryn Colliery

Middle Pit, Cwmpennar

Milfraen Colliery, Blaenavon

Miskin Colliery

Mynydd Bedwellte, Coal Mine Iii

Mynydd Bedwellte, Coal Mine Ii

Mynydd Bedwellte, Coal Mine I

Mynydd Bedwellte, Coal Mine Iv

Mynydd Cefn-y-gyngon, Coal Level Iii

Mynydd Cefn-y-gyngon, Coal Level I

Mynydd Cefn-y-gyngon, Coal Level Iv

Mynydd Cefn-y-gyngon, Coal Level Vii

Mynydd Cefn-y-gyngon, Coal Level Vi

Mynydd Cefn-y-gyngon, Coal Level V

Mynydd Cefn-y-gyngon, Pit I

Mynydd Cefn-y-gyngon, Trial Coal Level

Mynydd Fochriw, Coal Level

Mynydd-y-drum Coal Patch 1, Bf

Mynydd-y-drum Coal Patch 2, Bf

Nant Melin Colliery

Nantwen Colliery

Nant-y-bwlch, Coal Level Iii

Nant-y-bwlch, Coal Level Ii

Nant-y-bwlch, Coal Level I

Nant-y-bwlch, Coal Level Iv

New Dyffryn Colliery

New Pit, Holding Down Bolts

New Pit

New Pit, Remains Of Shaft

New Pit, Rubble Mound

New Pit, Stone Spread

No.1 Pit (dowlais)

No.6 Pit (dowlais)

Ochr-y-mynydd Level Iv

Ochr-y-mynydd Level Ix

Ochr-y-mynydd Level Viii

Ochr-y-mynydd Level Vii

Ochr-y-mynydd Level Vi

Ochr-y-mynydd Level V

Ochr-y-mynydd Level Xi

Ochr-y-mynydd Level X

Ochr-y-mynydd Tramming Level I

Ochyr-y-mynydd Coal Level I

Old Dyffryn Colliery

Onllwyn Colliery, Coal Level 2

Onllwyn Colliery, Coal Level 3

Onllwyn Colliery, Coal Level 4

Onllwyn Colliery, Level 1, Bft

Onllwyn Colliery

Padell-y-bwlch, Coal Level Ii

Padell-y-bwlch, Coal Level I

Pen-cae Level Ii

Penwaen Coal Level

Penybont Colliery

Pen-y-coedcae Level (east)

Pen-y-coedcae Level I

Pen-y-darren Colliery, Merthyr Tydfil

Pen-y-darren Disused Coal Pits, Merthyr Common East, Ne Of Pentrebach

Pit Head Building, Headframe And Tram Circuit, Big Pit Coal Mine, Blaenavon

Pochin Colliery, Tredegar

Pwll Du Limestone Quarry & Water Balance Lift

Raslas Pit

Rhymney Hill, Coal Mine

Rhymney Merthyr Colliery

Rock Colliery, Rheola Forest

Six Bells Colliery

South Dyffryn Coal Pits And Level

South Tunnel Pit

Taff Colliery

Taff Merthyr Colliery, Bedlinog

Taff Merthyr

Terrace Colliery

Tirherbert Colliery, Drift Entrance

Tirherbert Colliery

Tower Colliery Opencast Mine Workings

Tower Colliery

Tower Drift Mine, Hirwaun

Tower Graig Level, Building Ii

Tower Graig Level, Building I

Tower Graig Level, Hirwaun

Tower (old) Colliery, Hirwaun

Tre-aman Colliery

Trefil Quarries North

Trelewis Drift Mine, Bedlinog

Trewern Coal Mine

Tunnel Colliery

Tunnel Pits

Twyn Canwyllyr, Coal Level

Ty Trist Colliery

Ty-trist Colliery

Upper Dyffryn Colliery

Victoria Colliery

Vivian Colliery

Vivian Pit, Abertillery

Werfa Colliery

Whitworth Colliery

Winch Fawr Level V

Windber Colliery

Wingfield Pit

Ysgubor-wen Balance Pit

Big Pit National Coal Museum

The Winding House

Abernant Tunnel

Ashford tunnel N Portal (Monmouthshire and Brecon Canal)

Ashford Tunnel S Portal (Monmouthshire and Brecon Canal)

Hill's Tramroad Tunnel

Morlais Tunnel

Pwll Du Tunnel

Sugar Loaf Tunnel (Wales)

Tal-y-llyn Railway Tunnel

Torpantau tunnel

Tunnel under Canal