Knots have been of extraordinairy importance for the people of the Kolomna Culture. 6 different kind of knots have been found, three-dimensional in rings and objects, relief-like on coins. 
The double loop (lemniscate - mathematical symbol of infinity) has been prolonged to the shape of a Pretzel. We can only conject: a sign for connectivity and togetherness? A picture of unboundedness? 

6 Коломенских узлов: Клевер, Брецель, Пятерик, узлы 10-25, Восьмерик, узел грузчика

6 „Kolomna-Knots“: trefoil, pretzel, cinquefoil, knot 10-25, figure-eight knot, Stevedore-knot