Càrn Aosda throws out a four km long northern ridge which descends to the hamlet of Baddoch on the A93 road. Another shorter ridge goes NE and along with the north ridge encloses the Dubh-choire. Càrn Aosda's southern slopes descend into Butchart’s corrie which is drained by the headwaters of the Cairnwell Burn, the corrie is surprisingly unnamed on OS maps being well known by the skiing fraternity with two of the ski tows being named Butcharts access poma and Butcharts T Bar respectively.
