102-120/ΛΕ-ΝΕ. From southeast. 1= west edge of ΞΞ. 2= Line of west wall of Great Drain. 3= Late Roman water channel. 4= Fill II ... AMS Horizontal (normal) ... From southeast. 1= west edge of ΞΞ. 2= Line of west wall of Great Drain. 3= Late Roman water channel. 4= Fill II.