Kesh, or as it is locally spelled ‘Keash,’ is fifteen miles south of the town of Sligo, and consists of a few scattered buildings, with farms about them. The spot is at the foot of Keishcorran Mountain, an isolated mass of Carboniferous Limestone which rises to 1,183 feet ; and the country which extends south and west from this mountain for miles from Kesh presents an array of gravel eskers and elongated mounds of glacial material, with here and there a small lake or marsh in the hollows between them. Sprinklings of erratic boulders and stones occur up to the very summit of the mountain. These consist principally of red sand-stone, with a few of yellow sandstone and of dyke rocks. It is believed that these rocks could be found in place on the next hill range to the south and south-east of Kesh, around Lough Key, but this point has not been definitely established. Though no continuous deposit of drift was seen on the mountain, these erratic blocks are sufficient to show that it has been overwhelmed by ice.