Input (grade 11): Ketil's west face in Tasermiut, Greenland (also known as God's Thumbnail), has been reported as 1,400 m - 1,450 m high, (although some doubt has been cast on this).
Output (grade 10): Ketil's west face in Tasermiut, Greenland (also known as God's Thumbnail), has been reported as 1,400 m - 1,450 m high, but there are arguments.