The Roman Military in Britain – Part 6: Temporary Marching Camps in Wales

The following table contains the names, grid references, dimensions and enclosed areas of every known Roman camp in Wales. A separate description of each camp is available by clicking on its name. 

Location of Camp N.G.Ref. Dimensions Area Type
Derwydd-bach Farm, Gwynedd SH477454 350+ x 138+ ft (107+ x 42+ m) c.1½-15 acres (c.0.66-6 ha)
Pen-y-Gwrhyd, Gwynedd SH659557 720 x 620 ft (220 x 189 m) 10 acres (c.4 ha)
Llanfor, Gwynedd SH937363 1,250 x 1,000+ ft (381 x 305+ m) c.28¾ acres (c.11.6 ha)
Penrhos, Clwyd SJ042427 1,450+ x 1,250 ft (442 x 381 m) c.41½ acres (c.16.8 ha)
Clawdd Coch A, Gwynedd SJ252198 c.750 x c.890 ft (c.230 x c.270 m) c.15¼ acres (c.6.2 ha) !
Clawdd Coch B, Gwynedd SJ246202 irregular c.12½ acres (c.5 ha) !
Abertanat A, Powys SJ248214 unknown unknown !
Abertanat B, Powys SJ245208 unknown unknown !
Abertanat West, Powys SJ243212 unknown unknown !
Pant-teg Uchaf, Dyfed SN6449 reclassified as ‘military practice works’
Arhosfar Garreg, Dyfed SN802263 1,610 x 1,225 ft (491 x 373 m) c.45¼ acres (c.18.3 ha)
Y Pigwn 1, Dyfed/Powys SN827313 1,380 x 1,180 ft (421 x 360 m) 37½ acres (15 ha)
Y Pigwn 2, Dyfed/Powys SN827313 1,190 x 930 ft (363 x 283 m) 25½ acres (10 ha)
Carn Caca, West Glamorgan SN837001 c.665 x 785 ft (c.203 x 239 m) c.11¾ acres (c.4.8 ha)
Coelbren, West Glamorgan SN862102 1,436 x 1,090 (1,000) ft (438 x 332 (305) m) c.34½ acres (c.14 ha)
Beulah, Powys SN919505 1,375 x 1,160 ft (419 x 354 m) c.36½ acres (14.8 ha)
Ystradfellte, Powys SN924164 1,200 x 800 ft (366 x 244 m) c.22 acres (8.92 ha)
Esgairperfedd, Powys SN924799 920 x 800 ft (280 x 244 m) c.17 acres (c.6.84 ha)
St Harmon, Powys SN985717 1,125 x 740 ft (343 x 226 m) c.19 acres (c.7.73 ha)
Trefal, Powys SO0268 ? x ft (? x m) acres ( ha) ?
Glanmiheli, Powys SO157901 725 x 650 (800) ft (221 x 198 (244) m) 10¾-13¼ acres (4.38-5.39 ha)
Clyro, Powys SO225430 1,200 x 900 ft (366 x 274 m) c.24¾ acres (c.10 ha)
Walton 1 (west), Powys SO252598 550 x 470 ft (168 x 143 m) c.6 acres (2.4 ha)
Walton 2 (central), Powys SO254599 630 x 535 ft (192 x 163 m) c.7¾ acres (3.13 ha)
Walton 3 (east), Powys SO255600 550 x c.410 ft (168 x 125 m) c.5¼ acres (2.1 ha)
Hindwell Farm, Walton, Powys SO250608 1,560 x c.1,220 ft (475 x 372 m) c.43¾ acres (17.7 ha)
Blaen-cwm Bach, West Glamorgan SS796987 2,980 x 970 ft (908 x 295 m) 62½ acres (25.3 ha)
Twyn y Briddallt, Mid Glamorgan ST002982 1,250 x 580 ft (381 x 176 m) 16 acres (c.6.4 ha)
Pen y Coedcae, Mid Glamorgan ST059878 1,580 x 1,030 ft (481 x 314 m) 37½ acres (15 ha)
There being no single source of information for the data presented in this table, any references should be sought on the page for each individual marching camp.