article_snippet.sent: This image was taken beneath the waterline at the southern edge of the loch near the River Oich and shows Fort Augustus Abbey.
article_snippet.sent: Fort Augustus Abbey was a Benedictine monastery .
article_snippet.sent: the Life of St Columba by Adomnán, written in the 7th century.
article_snippet.sent: Columba, an Irish monk, had sent a disciple into the loch to prove .