You can also get a Mountain breaking wave which occurs about twice the height of the terrain, although very rare. I experienced just that returning to Gawler from Aldinga. Weather was marginal with 40-45 kt gusting winds, I still had more than the required visibility. Briefed my passenger before departure and tracked close to Murray Bridge in case we had to divert. Due to the strong winds I climbed to 4200 to cross the range (1900) on approach to Lyndoch, once clear I reduced power for a long decent to Gawler, as I reduced power with one hand still on the throttle the Bulldog flipped upside down. immediately applied full power and righted the plane. I wasn't quite sure what happend so I studied to get a better understanding of the weather. Found that even airliners have been lost to this phenomena.