Dry stone wall or wet stone wall?

Places near here

Fan FraithMountain / peak · 725 ydRuined walls above Fan Fraith ForestForest or wood · 1135 ydFan GyhirychMountain / peak · 1694 ydAncient cairn on Fan GyhirychAncient tomb or cairn · 1715 ydFan Gyhirych, CairnRound Barrow · 1726 ydQuarry in Old Red SandstoneOld home or work place · 1.2 miNant-y-Cae Bridge, Cnewr, Cray, Brecon Forest Tramroad ;Red Gill Bridge, Brecon Forest TramroadRailway Bridge · 1.3 miPant MawrCave · 1.6 miCulvert under Brecon Forest TramroadForest or wood · 1.6 miTower on the Slopes of Cefn CulCastle, fort or tower · 1.7 miTower at the Bwlch Bryn-rhuddCastle, fort or tower · 1.7 miWalled enclosure on Sand HillMountain or hill · 2.1 mi

Pictures: Alan Hughes, Wikimedia Commons · CC BY-SA 2.0; Alan Bowring, Wikimedia Commons · CC BY-SA 2.0; Gareth James, Wikimedia Commons · CC BY-SA 2.0; Alexander Henderson, Wikimedia Commons · CC BY-SA 2.0; Dave Farmer, Wikimedia Commons · CC BY-SA 2.0; Jonathan Billinger, Wikimedia Commons · CC BY-SA 2.0; David Gruar, Wikimedia Commons · CC BY-SA 2.0