An Cliseam is a Corbett of 800 m in Na h-Eileanan Siar [Western Isles]. Its key col is at sea level, so all 800 m of its height counts as drop.
It is the highest of the 6 register hills recorded in Na h-Eileanan Siar [Western Isles]; the next is Uisgneabhal Mor at 730.1 m, 69.9 m lower. Nothing higher stands within 81.2 km; the nearest higher summit is Creag an Fhithich (801 m), to the south-east. Its drop is the 5th greatest among the Corbetts, behind Goatfell at the top. It overtops all four of its nearest neighbours; the tallest of them, Uisgneabhal Mor, reaches 730.1 m. In the database's Harris and Nearby Islands region it is the highest of four register hills, above Uisgneabhal Mor, Tiorga Mor and Oireabhal. Its other name is Clisham. The highest point is recorded as rock, not a cairn. It falls on two OS 1:50,000 sheets, 13 and 14.
