Lag Tuleritg is a lake at Flims in the canton of Grisons, Switzerland.As close as 500 yards 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.