Ascetic Life
The vita preserved through Abba Serapion presents Mark as a purely anchoritic hermit who pursued solitude in its most absolute form. After withdrawing to his cave on Mount Trache, he is said to have remained ninety-five years in complete isolation, during which he saw neither a human face nor any beast or bird.
His sustenance, according to the account, came from desert plants, dust, and occasionally bitter seawater, and in the early years he went barefoot and unprotected against the desert's winter cold and summer heat. The sources describe persistent demonic harassment, with hostile forces threatening to drown him or hurl him from the mountain and demanding that he 'depart from our land.'