Croagh Patrick, nicknamed 'the Reek', is a mountain with a height of 764 m and an important site of pilgrimage in County Mayo, Ireland. The mountain has a pyramid-shaped peak and overlooks Clew Bay, rising above the village of Murrisk, several kilometres from Westport. It has long been seen as a holy mountain. It was the focus of a prehistoric ritual landscape, and later became associated with Saint Patrick, who is said to have spent forty days fasting on the summit.