Following mostly along the side of Berowra Creek along a section of the Great North Walk this walk is worth spending the day on. Crosslands is a good spot to break at about the half-way mark. Highlights include the views from the top of the ridges between Galston Gorge and Crosslands and the section of track west of Calana Creek. There are a few nice water falls and classic sandstone formations for the area. Getting to the start may be tricky but a taxi will drop you off.