Brick barrel vault; East wall is aligned north-south, barrel vaulting survives above internal face of east wall. Barrel vault is capped by clay waterproofing and then sealed by levelling dumps for building above. Observed and recorded in watching brief and excavated in Test Pit 1 and GP1.
Post medieval brick barrel vault. Truncated by construction of railway viaduct by cut (10). Vault is then repaired as (9) before Finally falling out of use and being back filled with concrete (15) - this may be related to the construction of the District line
Clay layer capping barrel vault (14). Upper surface / interface wit (12) consists of thin layer of yellow mortar. Possibly this deposit was intended to waterproof the top of the barrel vault
Dark rum layer representing post medieval made ground. Would have sealed brick barrel vault (14), possibly back fill of construction cut or later dumping over the vaulted brick structure.
brick barrel vault. n-s aligned. may be same as vault recorded to north in GT 1. infilled with hoggin to west, truncated to south and infilled with concrete to east - presumably into cellar
