Lake Olmist is the largest of the lakes surrounding Tallinn in Estonia, and is the main part of Tallinn's water supply system that supplies most of the city's drinking water. In the lake there is a rock called Linda's rock, and Estonian legends say that it is one of the rocks that Linda was supposed to carry to the grave of her husband Calif in Tombia, but she fell from her apron, so she sat on the rock and cried until the lake was created.