A fascinating ebook available free on the web is The Forgotten Hermitage of Skellig Michael by Walter Horn, Jenny White Marshall, and Grellan D. Rourke (Berkeley, CA: University of California Press, 1990). The book details archaeological investigations of a rocky island off County Kerry, Ireland, which housed a hermit’s dwelling in the 9th century. Includes photographs.
This 2006 essay titled “An Experience of the Eremitic Life” by Abbot Luke Rigby, a Benedictine monk at St. Louis Abbey in Missouri, recounts the author’s decision and how he eked out an eremitic life in his seventies residing near the abbey and school. An example of a contemporary Catholic pursuit of eremitism.