The Coghinas river has its source in the Alá mountain. It collects the waters of many minor tributaries and
crosses 2 lakes: the Coghinas lake and the lake of Casteldoria (in the picture above). Near Casteldoria there are some hot springs
and thermal baths, that were well know already in the ancient Roman times. After a run of of 116 km. it flows into the Asinara gulf.