Birkhouse Moor has two summits. The true top is on the main ridge to Striding Edge, which is followed by a stone wall. A cairn has been built a little to the west, but the wall appears to cross the highest point. The north top (2,315 ft) lies a quarter of a mile away at the meeting point of The Nab and the north ridge. A cairn has also been built here and there are good views to the north. Between the two tops is an area of marshy ground with a number of small tarns.