Poltross Burn Milecastle - Hadrian's Wall2013-04-12 · Free entry One of the best-preserved milecastles on Hadrian's Wall, Poltross includes an oven, a stair to the rampart walk, and the remains of its north gateway.How to find usPoltross Burn Milecastle - Hadrian's WallCumbriaVisit the attraction’s website ↗Get directions ↗