backfilling column pier lead object more backfilling oven pebble floor detail pebble surfaces pipe collar profile of robber trench quadropod in action reconstruction robber trench early in the morning (2) robber trench early in the morning Robber trench rubble surfaces near old work (2) rubble surfaces near old work Sarah Peacock moving scale view west end of site column base 1245 context D1240 D1302 context D1277 detail of floor digging a posthole excavating the robber trench footprint guided tour (2) guided tour photographer on roof pipe trench (2) pipe trench (3) pipe trench robber trench early in the morning (3) robber trench from east (1) robber trench from east (2) robber trench from east (3) robber trench from east (4) robber trench south colonnade 2512 Audley End small 2506 Audley End 2516 Audley End small