Keeill Corna More (St Mary's)

Remote keeill (13'6" x 9'6") up the Cornaa valley in Maughold, with cross fragments spanning 6th-7th century AND a 12th century runic inscription. This remarkable date range proves 600+ years of continuous use. WHY: A site used for 600 years accumulates an extraordinary quantity of material. The remote valley location means minimal modern disturbance. The path up the Cornaa valley was a well-used route for centuries. A local blog (manxkeeills.wordpress.com) describes it as 'seldom visited and rather difficult to find' — perfect for undisturbed detecting.