Castle Garth, Heron Pit, drawbridge pit etc

Barbican, prison and pits. Mid C13 and C17. Coursed squared sandstone; ashlar-
lined prison pit. Heron pit: deep, square; no openings. Shouldered arch at
right in wall to north leading to ditch. Garde-robe above pit has chamfered round-
headed door. Drawbridge pit: remodelled when Black Gate built. Civil war pit:
C17 defence. Sources: M. Ellison, M. Finch and B. Harbottle 'The Excavation of
a C17 Pit at the Black Gate, Newcastle upon Tyne, 1975' Post-Medieval Archaeology
v.13 (1979) pp. 153-181. B. Harbottle 'The Castle of Newcastle upon Tyne'
Chateau-Gaillard IX-X, 1982, pp. 407-418; M. Ellison and B. Harbottle 'The
Excavation of a Cl7th-Century Bastion in the Castle of Newcastle upon Tyne, 1976-
81' Archaeologia Aeliana 5 XI pp. 135-264. (1983). LISTED GRADE 1 AND SCHEDULED ANCIENT MONUMENT