Lag Tuleritg is a lake at Flims in the canton of Grisons, Switzerland. As close as 500 metres to the Caumasee, well known for swimming, is another dell, home of Lag Tuleritg which is just 18 metres higher. This lake falls completely dry in autumn and remains empty until being filled by a small river of just about half a mile in length (falling some 100 metres in level) that will start flowing around May depending on temperatures and snow melt rate in the mountains. Its origin is another lake, Lag Prau Pulté, which is fed by underground water only in spring, disappearing in autumn and staying dry all winter. During a cold period in spring, water that entered the dell of this lake may disappear again as snow melt decreases and all water remains in the underground flow. Due to its origin the