Knot of eternity is a type of sign which belongs to four knot which have no start point and no ending point. this is a very beautiful design.
It is also used in kolam or rangoli making in India. this knots are symbols of eternity. Tibetan or Buddhist people believe that this sign is a sign of eternity for them.
So this is the Knot of Eternity here :-
Watch this have no start point nor ending point, so it is a type of illusion. isn’t it.