Slievemore, Mountain summit on Achill Island, Ireland

Slievemore is a mountain on Achill Island, off the west coast of Ireland, and is the second highest peak on the island at around 671 meters. Its cone-like shape makes it easy to spot from many points across the island, including from the shore near Dugort.

A community once lived in stone cottages at the base of the mountain, leaving behind a cluster of dwellings that can still be seen today. The settlement was abandoned in the mid-1800s, during the years of the Great Famine, when much of the local population left or perished.

The name Slievemore comes from the Irish Sliabh Mór, meaning "big mountain". Since 1991 the Achill Archaeological Field School, based at the Achill Archaeology Centre in Dooagh, has trained students in archaeology and anthropology through excavations in the Deserted Village on the mountain's slopes.

Most walkers start from Dugort Beach, where the path up the slopes is easiest to follow. Sturdy footwear is a good idea, as the upper sections are steep and the ground can be uneven and rocky.

Slievemore is the second-highest peak on Achill Island, after Croaghaun, standing 671 m (2,201 ft) high. Its Irish name Sliabh Mór means "big mountain". Since 1991 the Achill Archaeological Field School, based at the Achill Archaeology Centre in Dooagh, has run the Deserted Village Project, excavating the mountain's archaeological remains, which span roughly 5,000 years from the Neolithic to the 1850s.