General view of the Altar. Consulting engineer standing at one end ... Nomlas. (Sal. ne. #51) northeast ... 5 Aug 1931
View of the Altar from the northwest corner, showing foundations and footing trench along the west side ... south 1845 ... July 1967
General view after excavation of footing trench along the west side ... southeast 1843 ... July 1967
Mason's mark near the west side of the Altar at the end of the top step ... 1455 ... June 1951