Sacred Destinations Destinations Monasterboice Monasterboice Photos 15670 × share full URL share short URL embed link code photo 34 of 70 Previous | Next Adam and Eve, Cain and Abel Detail of eastern face of Muirdach's Cross, depicting Adam and Eve and Cain slaying Abel. The cross dates from 900-923 AD and stands 5.5m (16 feet) tall. Credit: Holly Hayes