A Bhuidhneach Bheag sits on a large summit plateau to the east of the pass of Drumochter. It is normally climbed in conjunction with Carn na Caim which sits at the opposite end of the plateau. The hill is normally accessed via its SE ridge which runs down easy slopes to Dalnaspidle on the A9 below. This ridge does become increasingly more craggy as you near the summit.
The Munro itself is not particularly well noted it forms little more than a small rising in the plateau making it hard to find in difficult conditions but its does possess some sharp slopes and crags to the south. To the east there is also a deep gully Cama Choire which cuts deep into the mountain, which makes for a fantastic route of ascent but involves a fairly long walk in compared to the easier and therefore more popular route up the SE ridge. To include Carn na Caim in your route it is a long airy walk NNE along the summit plateau which offers nothing in the way of technical difficulties apart from the actual route finding itself which can be tricky in cloudy weather due to the vast size of it.