Croagh Patrick (, meaning (Saint) Patrick's Stack), nicknamed the Reek, is a mountain and an important site of pilgrimage in Mayo, Ireland. It is from Westport, above the villages of Murrisk and Lecanvey. It is the fourth highest mountain in Mayo on the international P600 listing after Mweelrea, Nephin and Barrclashcame. It is climbed by pilgrims on Reek Sunday every year, which is the last Sunday in July. It forms the southern part of a U-shaped valley created by a glacier flowing into Clew Bay in the last Ice Age. Croagh Patrick is part of a longer east-west ridge; the lower westernmost peak is named Ben Goram.