Located in the Great Lake and South Esk catchment area, Poatina makes use of a 900 metre descent from the Great Western Tiers to the Norfolk Plains in Tasmania’s northern Midlands. Water from Great Lake is diverted via a tunnel to the edge of the Great Western Tiers where it plummets down a viable penstock line, which enters the ground again near the power station. The Poatina Power Station is located 150 metres underground in a massive artificial cavern hence the name Poatina, Palawa for “cavern” or “cave”. We recently had the privilege in rehabilitating the access tunnel to the artificial cavern, where the Poatina Power Station is situated.