Mangerton or Mangerton Mountain (, meaning the long-haired (mountain)), at , is the 19th-highest peak in Ireland on the Arderin list, and the 26th-highest mountain according to the Vandeleur-Lynam list. Mangerton is the tallest mountain in the Mangerton Mountain Group, also called the Mangerton Mountains or the Mountains of East Kerry, a range that includes five other major mountains that have a height above . Mangerton's western slopes lie within the Killarney National Park. On Mangerton's north-western face lies a deep corrie lake called the Devil's Punchbowl, which is a popular scenic destination for hill walkers; although the mountain is often overlooked by walkers due to the proximity of its more scenic and accessible neighbour, Torc Mountain. The far northern slopes of Mangerton was the site of an important 13th-century battle between the Mac Cárthaigh (Gaelic forces), and the FitzGeralds (Norman forces), known as the Tooreencormick battle site.