Sacred Destinations Destinations Monasterboice Monasterboice Photos 26717 × share full URL share short URL embed link code photo 30 of 70 Previous | Next Detail of Southern Edge of Muirdach's Cross Detail of southern edge of Muirdach's Cross, named for the abbot identified in an inscription on the base. It dates from 900-923 AD and stands 5.5m (16 feet) tall. Credit: Holly Hayes