Mezzanine Ridge is the 'intermediary' ridge that lies between South and Southeast ridges on Mt Barney. It is one of the most exposed ridges on the mountain as the main 'feature' the razorback does have at various points a drop of 200m on each side. The walk is definitely NOT for people who are "vertically challenged" - i.e. people who are "challenged" by big vertical drops on a very narrow ridge.