What is "tollense"

The Tollense is a river in Mecklenburg-Vorpommern in northeastern Germany, right tributary of the Peene. The river starts as the outflow of the lake Tollensesee in Neubrandenburg. The Tollense is 68 km long and empties into the river Peene in Demmin. The rivers are part of the Mecklenburg Lake Plateau, with one of the largest areas of fens and about a thousand lakes, left over from the Ice Age.