The Megalith MapMegalithic and Prehistoric sites on map square SHGo back to the main map
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 A55 Erratic Natural Stone / Erratic / Other Natural Feature in Anglesey (Sir Ynys Mon) at SH375759
Condition: 5 , Ambience: 4 , Access: 5
 Afon Anafon Arrow Stone Sculptured Stone in Gwynedd at SH69267098
Condition: 4 , Ambience: 5 , Access: 4
 Afon Garreg Wen Standing Stone (Menhir) in Gwynedd at SH71336761
 Alltwen Hillfort Hillfort in Conwy (Bwrdeistref Sirol) at SH745773
, Access: 2
 Anglesey Eisteddfod Circle Modern Stone Circle / Monolith in Anglesey (Sir Ynys Mon) at SH607761
Condition: 5 , Ambience: 5 , Access: 5
 Arthog Standing Stones Stone Circle in Gwynedd at SH65261393
 Bachwen Burial Chamber (Dolmen) in Gwynedd at SH407495
Condition: 4 , Ambience: 4 , Access: 3
Bala Modern Eisteddfod Stone Circle Modern Stone Circle / Monolith in Gwynedd at SH930362
 Barclodiad-y-Gawres (Anglesey) Passage Grave in Anglesey (Sir Ynys Mon) at SH32907074
Condition: 4 , Ambience: 5 , Access: 4
 Barclodiad-y-Gawres (Conwy) Cairn in Conwy (Bwrdeistref Sirol) at SH716716
Condition: 3 , Ambience: 4 , Access: 3
 Bedd Branwen Ring Cairn in Anglesey (Sir Ynys Mon) at SH361850
Condition: 3 , Ambience: 4 , Access: 2
 Bedd Gelert Marker Stone in Gwynedd at SH591479
Condition: 2 , Ambience: 4 , Access: 4
 Bedd Gorfal Stone Circle in Gwynedd at SH61293114
Condition: 2 , Ambience: 4 , Access: 4
 Bedd Porus Early Christian Sculptured Stone in Gwynedd at SH73293136
Condition: 1 , Ambience: 3 , Access: 4
 Bedd-y-brenin Cairn in Gwynedd at SH6343811484
Condition: 2 , Ambience: 4 , Access: 3
Benllech Chambered Tomb in Anglesey (Sir Ynys Mon) at SH518825
Condition: 3
 Betws Fawr Standing Stone (Menhir) in Gwynedd at SH4647540610
Condition: 5 , Ambience: 4 , Access: 4
 Beuno's Well (Clynnog Fawr) Holy Well or Sacred Spring in Gwynedd at SH412493
Bishop's Quarries Hut Circle Ancient Village or Settlement in Conwy (Bwrdeistref Sirol) at SH76498311
 Blaen y Cwm Barrow Round Barrow(s) in Conwy (Bwrdeistref Sirol) at SH93916091
Condition: 5 , Ambience: 4 , Access: 3
 Bod Deiniol Standing Stone (Menhir) in Anglesey (Sir Ynys Mon) at SH368857
Condition: 4 , Ambience: 3 , Access: 4
 Bodewryd Standing Stone (Menhir) in Anglesey (Sir Ynys Mon) at SH406902
Condition: 5
 Bodfan Standing Stone Standing Stone (Menhir) in Gwynedd at SH4420555327
Condition: 4 , Ambience: 3 , Access: 2
 Bodfeddan Inscribed Stone Standing Stone (Menhir) in Anglesey (Sir Ynys Mon) at SH356745
Condition: 4 , Ambience: 2 , Access: 5
 Bodowyr Passage Grave in Anglesey (Sir Ynys Mon) at SH46276816
Condition: 3 , Ambience: 3 , Access: 4
 Bodysgallen Hillfort in Conwy (Bwrdeistref Sirol) at SH798791
Condition: 2 , Ambience: 4 , Access: 3
 Boncyn Arian Round Barrow(s) in Denbighshire (Sir Ddinbych) at SH985577
Condition: 3 , Ambience: 3 , Access: 4
 Borthwen Beach Chambered Tomb in Anglesey (Sir Ynys Mon) at SH2714975151
Condition: 3 , Ambience: 2 , Access: 4
Brenig 14 Cairn in Conwy (Bwrdeistref Sirol) at SH983561
 Brenig 40 Round Barrow(s) in Conwy (Bwrdeistref Sirol) at SH978571
 Brenig 41 Round Barrow(s) in Conwy (Bwrdeistref Sirol) at SH978570
 Brenig 42 Barrow Cemetery in Denbighshire (Sir Ddinbych) at SH975567
Condition: 4 , Ambience: 4 , Access: 4
 Brenig 44 Timber Circle in Denbighshire (Sir Ddinbych) at SH983572
Condition: 3 , Ambience: 3 , Access: 4
 Brenig 46 Cairn in Conwy (Bwrdeistref Sirol) at SH985569
Condition: 1 , Ambience: 4 , Access: 4
 Brenig 47 Round Cairn in Denbighshire (Sir Ddinbych) at SH98925804
, Ambience: 4 , Access: 4
Brenig 5 Ring Cairn in Conwy (Bwrdeistref Sirol) at SH995564
 Brenig 51 Cairn in Conwy (Bwrdeistref Sirol) at SH989566
Condition: 4 , Ambience: 5 , Access: 2
 Brenig 6 Cairn in Denbighshire (Sir Ddinbych) at SH99525631
Condition: 3 , Ambience: 3 , Access: 3
 Brenig 8 Round Barrow(s) in Conwy (Bwrdeistref Sirol) at SH987563
 Brenig Lake Barrow Round Barrow(s) in Denbighshire (Sir Ddinbych) at SH979570
Condition: 2 , Ambience: 4 , Access: 1
Brenig Mesolithic Camp Site Ancient Village or Settlement in Denbighshire (Sir Ddinbych) at SH985576
Condition: 2 , Access: 3
 Bron y Foel Isaf Portal Tomb in Gwynedd at SH608246
Condition: 2 , Ambience: 5 , Access: 4
 Bron Y Foel Recumbent Stone Portal Tomb in Gwynedd at SH611250
Condition: 2 , Ambience: 2 , Access: 2
 Bron-Llety-Ifan Rock Art in Gwynedd at SH63331263
Condition: 5 , Ambience: 5 , Access: 5
 Bronheulog Burial Chamber (Dolmen) in Gwynedd at SH23192812
Condition: 2
Brwyn Llynau Ancient Village or Settlement in Gwynedd at SH58652956
 Bryn Cader Faner Ring Cairn in Gwynedd at SH648353
Condition: 4 , Ambience: 4 , Access: 1
Bryn Cader Faner Hut Circles Ancient Village or Settlement in Gwynedd at SH64543517
 Bryn Celli Ddu Passage Grave in Anglesey (Sir Ynys Mon) at SH50757017
Condition: 5 , Ambience: 3 , Access: 4
 Bryn Celli Ddu Cairn Cairn in Anglesey (Sir Ynys Mon) at SH50727012
Condition: 1 , Ambience: 4 , Access: 4
 Bryn Celli Ddu Gorsedd Rock Art in Anglesey (Sir Ynys Mon) at SH505703
Condition: 5 , Ambience: 5 , Access: 4
 Bryn Celli Ddu Standing Stone Standing Stone (Menhir) in Anglesey (Sir Ynys Mon) at SH50637010
Condition: 4 , Ambience: 5 , Access: 4
 Bryn Dyfrydog Standing Stone (Menhir) in Anglesey (Sir Ynys Mon) at SH431859
Condition: 4 , Ambience: 3 , Access: 4
 Bryn Euryn Hillfort in Conwy (Bwrdeistref Sirol) at SH832798
Condition: 2 , Ambience: 3 , Access: 3
 Bryn Gwyn Stones Stone Circle in Anglesey (Sir Ynys Mon) at SH462669
Condition: 3 , Ambience: 3 , Access: 4
 Bryn Seward Stone Row Stone Row / Alignment in Gwynedd at SH62631175
Condition: 3 , Ambience: 3 , Access: 5
Bryn y Castell Hillfort in Gwynedd at SH728429
Condition: 4 , Ambience: 5 , Access: 5
 Bryn y fedwyn Marker Stone in Gwynedd at SH320450
Condition: 4 , Ambience: 3 , Access: 3
 Bryn yr Hen Bobl Chambered Cairn in Anglesey (Sir Ynys Mon) at SH519690
Condition: 3 , Ambience: 3 , Access: 2
Bryn-Melyn Ancient Village or Settlement in Gwynedd at SH62923569
Brynia Poethion Ancient Village or Settlement in Conwy (Bwrdeistref Sirol) at SH76998343
 Bryniau'r Tyddyn Standing Stone (Menhir) in Gwynedd at SH50784240
 Brynsiencyn Round Barrow(s) in Anglesey (Sir Ynys Mon) at SH488670
 Bwa Gwyn Natural Stone / Erratic / Other Natural Feature in Anglesey (Sir Ynys Mon) at SH259762
Condition: 5 , Ambience: 5 , Access: 2
 Bwlch y Ddeufaen Standing Stones in Conwy (Bwrdeistref Sirol) at SH716716
Condition: 4 , Ambience: 3
Bwlch y Garnedd Standing Stone (Menhir) in Conwy (Bwrdeistref Sirol) at SH9045254194
Condition: 4 , Ambience: 5 , Access: 3
 Bwlch y Rhiwgyr Ring Cairn in Gwynedd at SH62712004
Condition: 2 , Ambience: 5 , Access: 2
 Bwlch ym Mhwll-le Cairn in Gwynedd at SH63746835
Condition: 3 , Ambience: 5 , Access: 2
Bwlch-Y-Dafarn Ancient Village or Settlement in Anglesey (Sir Ynys Mon) at SH4929285663
Bwlch-Y-Dafarn Enclosed Settlement Ancient Village or Settlement in Anglesey (Sir Ynys Mon) at SH4900085103
Bwlch-Y-Dafarn Settlement Enclosure Ancient Village or Settlement in Anglesey (Sir Ynys Mon) at SH4910585235
Condition: 2
 Cadair Idris Stone Standing Stone (Menhir) in Gwynedd at SH657142
Condition: 4 , Ambience: 5 , Access: 4
 Cader Elwa Standing Stone (Menhir) in Gwynedd at SH542683
Condition: 4
 Cae Coch Standing Stone (Menhir) in Conwy (Bwrdeistref Sirol) at SH73287166
Condition: 4 , Ambience: 5 , Access: 3
 Cae Du Cairn in Conwy (Bwrdeistref Sirol) at SH75206616
Condition: 4 , Ambience: 4 , Access: 3
Cae Marh Ancient Village or Settlement in Anglesey (Sir Ynys Mon) at SH5016784694
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With thanks to Alastair McIvor for development of the original Megalith Map. | 
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