List of sites and alignments on the Scillies - Ancient Penwith | Cornwall

Mount Flagon menhir  SV 9093 1093
Middle Arthur chambered cairn  SV 939 138
Little Arthur cairn  SV 9413 1389
Great Ganilly cairn  SV 946 146

White Island cairn   SV 924 176
Knackyboy cairn  SV 9235 1586
Innisidgen tumulus  SV 922 126

Castle Down cairn  SV 886 158
Knackyboy cairn  SV 9235 1586
Chapel Downs cairns  SV 942 158

South Hill cairn, Samson  SV 878 124
(Bar Point, St Mary's)
Great Arthur cairn  SV 942 135
Menawathan cairn  SV 9553 1366

Innisidgen chambered cairn  SV 922 126
Gun Hill cairn  SV 9390 1537
Chapel Downs cairns  SV 942 158

Innisidgen  SV 922 126
Tresco Abbey  SV 8951 1429
Bryher cairnfield  SV 876 156

South Hill chambered mound, Samson  SV 878 124
Works Carn, Samson Hill, Bryher  SV 8781 1410
Tumulus, Bryher cairnfield  SV 876 156
Shipman Head cliff stronghold  SV 876 156
Shipman Head is quite big and long, and the alignment strikes one part of it. South Hill is quite long too, though this line follows its long axis through a few remains on top of it.

North Hill cairn, Samson  SV 877 131
?? Tresco (suspected site in SE of island) SV 8998 1401
Cruther's Hill N entrance mound, St Martins  SV 9289 1522
Chapel Downs cairns, St Martins  SV 942 158

Carn of Works, South Hill, Gugh  SV 89086 08065
North Hill cairns, Samson  SV 877 131
Gweal Hill E entrance mound, Bryher  SV 8716 1492

Obadiah's Barrow, Gugh  SV 887 085
Buzza Hill cairn, St Mary's  SV 9059 1037
Middle Arthur N entrance mound  SV 939 138
Great Ganilly C cairn  SV 946 146

White Island cairn  SV 9224 1762
Castle Down chambered mound, Tresco  SV 886 158
Gweal Hill SE entrance mound  SV 8716 1492
All are chambered cairns.

Mt Flagon menhir, St Mary's  SV 9093 1093 
Long Rock menhir  SV 914 124
Knackyboy cairn  SV 9235 1586

Great Arthur N entrance mound SV 942 135
Little Arthur cairns  SV 9413 1390
Gun Hill  SV 9390 1537

Innisidgen SE chambered cairn SV 922 126
Buzza Hill entrance mound  SV 9059 1037
Clapper of Works entrance mound, Gugh  SV 8902 0794
All chambered cairns.

Great Ganilly NW cairn  SV 946 146
Gun Hill cairn  SV 9390 1537
White Island chambered cairn  SV 924 176

Great Ganilly C cairn  SV 946 146
Tresco Abbey  SV 8951 1429
Bonfire Carn, Samson Hill, Bryher  SV 8793 1423

Great Arthur N cairn  SV 942 135
Middle Arthur S and C cairns  SV 939 138
Cruther's Hill C cairn  SV 9291 1517 
Knackyboy cairn  SV 9235 1586

Gweal Hill cairns, Bryher  SV 8716 1492
Hillside Farm cairn, Bryher  SV 878 145
Halangy Lower cairn, St Mary's  SV 911 123
Maypole cairn  SV 920 117

South Hill C mound, Samson  SV 878 124
Bant's Carn chambered mound  SV 910 123
Halangy Lower mound  SV 911 123
Helvear Hill cairn  SV 922 123

SC20 South Hill - Maypole

South Hill S cairn  SV 878 124
Carn Morval Down chambered mound  SV 907 119
Maypole cairn  SV 920 117

Carn Morval NE cairn  SV 9084 1196
Halangy Lower barrow  SV 911 123
Porthloo NE barrow  SV 9152 1280
Gun Hill cairn, St Martin's  SV 9390 1537

Gun Hill cairn, St Martin's  SV 9390 1537
Cruther's Hill C cairn  SV 9291 1517
Works Carn, Samson Hill, Bryher  SV 8781 1410

Wingletang Down cairn cemetery, St Agnes  SV 883 075
Obadiah's Barrow, Gugh  SV 887 085
Halangy Lower cairn, St Mary's  SV 911 123
Cruther's Hill N cairn, St Martin's  SV 9289 1522

Periglis Stone menhir, St Agnes  SV 8762 0833
Carn Morval Down cairn, St Mary's  SV 9084 1196
Halangy Lower cairn  SV 911 123
Porthloo W cairn, St Mary's  SV 9151 1276
Chapel Downs cairns, St Martin's  SV 942 158

The only five-site Scilly alignment found thus far.

Periglis Stone (menhir), St Agnes  SV 8762 0833
North Hill S cairn, Bryher  SV 877 131
Hillside Farm mound  SV 878 145
Bryher cairnfield  SV 876 156

South Hill N cairn, Samson  SV 878 124
Cruther's Hill S cairn  SV 9295 1513
Higher Town Bay stone row  SV 933 153
Chapel Downs cairns  SV 942 158 

Bant's Carn menhir. SV 9109 1254. 49.933014N 6.306276W. MG. PS.

Bant's Carn Late Stone Age chambered mound. SV 910 123. 49.930816N 6.3073344W. MA. EH.

Bar Point Bronze Age round hut settlement. SV 915 129. 49.936454N 6.300867W. MG. PS.

Bonfire Carn, Bryher, beacon hill. SV 8793 1423. 49.946529N 6.3515475W.

Bryher cairnfield. About 134 Bronze Age cairns. SV 876156. 49.963127N 6.3576497W. MG.

Bryher holed stone. Site of Bronze Age double holed stone, now moved to Tresco Abbey. SV 8791 1509. 49.954275N 6.3525471W.

Burnt Hill cliff castle. SV 917164. 49.967948N 6.3008883W.

Buzza Hill entrance mound. SV 9059 1037. 49.913295N 6.3114838W.

Carn Morval Down Neolithic chambered mound. SV 907 119. 49.927072N 6.311182W. MG. PS.

Carn Morval Down Cairn. SV 9084 1196. 49.927683N 6.309285W. MG. PS.

Carn of Works, large chambered mound. SV 8909 0807. 49.891842N 6.3305134W.

Carn Valla, Gugh entrance mound. SV 8886 0845. 49.895179N 6.3339644W

Castle Down Tresco chambered mound. SV886158. 49.960957N 6.343505W. MG.

Castle Down cairnfield Bronze Age cairnfield. SV 8832 1639. 49.966104N 6.3478749W. PS.  

Chapel Downs Cairns and field system. SV 942158. 49.963853N 6.2656495W.

Cruther's Hill C entrance mound. SV 9291 1517. 49.957541N 6.2830829W

Cruther's Hill N entrance mound. SV 9289 1522. 49.957979N 6.2834008W

Cruther's Hill S entrance mound. SV 9295 1513. 49.957202N 6.2824950W

Giant's Castle Iron Age cliff castle. SV 9250 1009. 49.911769N 6.2847331W.

Great Arthur Cairns, three entrance mounds. SV 942 135. 49.943225N 6.2638242W.

Great Ganilly Cairns. SV 946 146. 49.953295N 6.2591366W.

Gweal Hill, Scillonian entrance mound, ruined. SV 8716 1492. 49.952314N 6.3628083W. MG.

Gweal Hill Cairn. SV 87161492. 49.95231N 6.362808W. MG.  

Gweal Hill Kerbed cairn. SV 8716 1492. 49.952314N 6.3628083W. MG.

Halangy Down ancient settlement. SV 911 124. 49° 55' 52.07"" N 6° 18' 18.64" W. MG.

Halangy Lower Chambered cairn. SV 911 123. 49.930866N 6.305945W. MG.

Hanjague marine rock outcrop.

Helvear Farm Bronze Age cairn. SV 922 123. 49.931434N 6.290662W. MG. PS. 

Helvear Hill Scillonian chambered cairn. SV923123. 49.931485N 6.289272W. MG. PS.

Higher Town Bay stone row, St Martin's. SV 933 153. 49.958907N 6.2777647W. MG.

Hillside Farm Iron Age cist mound, Bryher, destroyed. Goods found of a unique sword and mirror. SV 878 145. 49.948881N 6.353573W. MG.

Innisidgen chambered cairns. SV922126. 49°56'0.57"N 6°17'24.18W. WP. MA.

Kittern Hill ancient settlement with cairn cemetery. SV 888 087. 49.897389N 6.3349986W.

Kittern Hill entrance mound. SV 8879 0866. 49.897025N 6.3351052W.

Kittern Hill 2 Cairn. SV 8879 0866.

Knackyboy cairn. SV 92351586. 49.96344N 6.29142W. CF.

Little Arthur cairn group, five cairns. SV 94126 13895. 49.946726N 6.2651641W.

Long Rock menhir. SV 914124. 49.93192N 6.30186W. MG.

Maypole Scillonian chambered mound. SV 920 117. 49.925950N 6.292962W. MG. PS.

Menawathan Cairn. SV 9553 1366. 49.945339N 6.2454660W.

Middle Arthur entrance mound. SV 939 138. 49.945762N 6.2682318W.

Nornour ancient village. SV944147. 49.954088N 6.261996W. MG.

North Hill, twelve cairns and entrance mounds. SV 877 131. 49.93611N 6.353256W. MG.

North Hill, Samson, entrance mound. SV 8774 1308. 49.936117N 6.3532567W.   MG.

Obadiah's Barrow Scillonian chambered barrow. SV 887 085. 49°53'41.66"N 6°20'7.38"W. WP. MG. MA. 

Old Man of Gugh menhir. SV 891 084. 49°53'38.99"N 6°19'52.09"W. MG.

Periglis Stone, aka Priest's Rock. Menhir. SV 8762 0833. 49.893456N 6.3510819W.

Porth Hellick Scillonian chambered cairn. SV 929 108. 49°55'3.74"N 6°16'44.01"W. MA.

Porthcressa barrow field - 11 Iron Age cists and other finds. Destroyed, lying underneath housing estate. SV901104. 49.913309N 6.318313W. MG.

Porthloo Bronze Age cairn. SV91511276. 49.935204N 6.300616W. MG. PS.

Porthloo Barrow. SV91521280. 49.935568N 6.300509W. MG. PS.

Samson Hill, Bryher. Two cairns, possibly chambered. 49.946449N 6.3526041W.

Shipman Head cliff stronghold. SV876156. 49.958641N 6.357244W. MG. PS.

St Warna's Well. Holy Well. SV 8804 0778. 49.888743N 6.3448077W.

Stone Row, Gugh. SV 88839 08565. 49.896201N. 6.3343501W

Tinkler's Hill. Four cairns on crest of hill.  SV917164. 49.967947N  6.300888W.

Tresco Abbey. A priory church. SV 8951 1429.  49.947906N 6.329584W.

White Island chambered cairn. SV 924 176. 49.979071N 6.292114W. MG.

White Island entrance mound and five cairns. SV 9224 1762. 49.979169N 6.2943554W.

Wingletang Down. Cairn cemetery, 43 cairns. SV 883 075. 49.886367N 6.3409730W.