An Cruachan is a Graham of 706.2 m in Highland. All four of its nearest neighbours are higher, up to An Riabhachan at 1,127.7 m.
It sits below An Socach (Highland, NH100332), only 2.7 km to the south and 363.4 m higher. The higher hill nearest to it, An Socach, is a Munro, 2.7 km to the south. The database describes the top as a large cairn.