Theun-Hinboun Power Company construction workers crossing over a diversion tunnel on the Nam Gnounang River directly downstream of the Nam Gnounang Dam construction site. Theun Hinboun Power Company's Nam Theun-Hinboun Hydropower Project is located in Southern Lao PDR. The Nam Gnounang River flows into the Nam Theun/Nam Kading River system which is one of many major tributary systems on the Mekong River.