..I use the inverted for a good reason.
What is now a transept, only became so when an arch was cut through in the
Victorian clean-up.
Prior to this, the square cell was self contained with a shallow sanctuary, square-ended with rib vaulting, round arch and
Corinthian capitals (see picture). Exactly why the Templars needed a separate sanctuary is still a bit
of a mystery, though it has been suggested that it was more secular, being a strong room or some such....ahhh, the mysteries of that occult band of brothers.....