This circular ceramic feature is around the cut into the bedrock, 7176, which, given its apparent depth, is almost certainly a well. Consequently, this is interpreted as a kind of 'wellhead', comparanda for which are known.
Circular burnt feature in the east-central part of room 1, Circular cut into bedrock in NE corner of room H1, Cylindrical ceramic feature around cut 7076.
Concrete wall running E-W at S limit of Room 5; Concrete wall running N-S at W limit of Room 5; Concrete wall running E-W at SW corner of Room 4; Stone threshold between Rooms H4 and H5; Concrete wall running E-W at SE corner of Room 4; Stone threshold between Rooms H4 and H5; Long ashlar wall running N-S at eastern limit of rooms 4, 5, and 6; Four large square tufo blocks along E wall of Room 5; Line of small stones along W face of blocks 7198; Cut into SU 7150 E of wall 7117; Fill of cut 7155; Cut into SU 7150 in center of Room 5; Fill of cut 7151
Fill of a negative feature south of the north wall of room H1.; Circular cut into bedrock in NE corner of room H1; Cylindrical ceramic feature around cut 7076.
View from east
View from west
View from south