Very Early Church found at 'Armageddon'

Fascinating news from the Telegraph:

Prisoners helped discover one of Christianity's earliest churches when they
took part in an archaeological dig inside one of Israel's top security
jails.
A large and superbly preserved mosaic with a Greek inscription
referring to the "Lord Jesus Christ" and featuring two images of a fish - an
early Christian symbol - was discovered during renovation work inside the prison
at Megiddo.