National Geographic : 1956 Dec
721 Jesus Said, "Before the Cock Crow, Thou Shalt Deny Me Thrice"-Matthew 26:34 Gallicantu (Latin for cock's crow) commemorates Peter's repentance in Caiaphas's courtyard. The site was noted by a French pilgrim in the year 333. The original St. Peter's Church rose some 100 years later, perhaps on this spot. Here a Latin priest celebrates Mass in a grotto beneath the 20th-century church.