Lake Purrumbete is a volcanic crater lake near Camperdown, offering a deep freshwater diving experience. The site features walls and drop-offs that descend to 50 metres, with an average depth of 45 metres. Thermal stratification occurs, and visibility is highly variable, often requiring the use of torches. Divers should be prepared for mild currents and potential entanglement risks in deeper areas. Entry is possible via shore or boat, though shore entries require shuffling feet to avoid disturbing the bottom. This site is suited for advanced divers due to the depth and navigation requirements. The habitat supports temperate freshwater fish, though visibility and topography are the primary features.

Lake Bullen Merri is a volcanic crater lake near Camperdown that offers unique freshwater wall and drop-off diving. The site features a sharp drop from the shore, with depths ranging from 3 to 50 metres. Due to the significant depth and potential for thermal stratification, this site is suited for intermediate divers and technical training. Divers should be prepared for cold water temperatures and variable visibility between 3 and 20 metres. Entry is via the shore. Hazards include cold water, low visibility, and potential entanglement from discarded fishing line. A dive knife or line cutter is essential equipment for all divers at this location.