The Church of St John and St George has a 6th-century mosaic floor. A reliquary contains the skulls of the 14 monks martyred by the Persians, and a glass casket encloses the incorrupt remains of a Romanian monk who died in 1960. A niche contains the tomb of St George. The monastery also holds the tombs of the five hermits who. Katherine Perakis, a volunteer bookstore cashier at this year’s…