At MRU, in addition to the concrete dragon teeth, there are also the so-called "hippo's teeth". The structure is classified as the so-called anti-tank poles. It was made of impregnated wood in the form of poles driven into the ground in a checkerboard pattern.
There is also an anti-tank dam on the river with teeth at this point.
The teeth are only on the banks of the river!! You have to get off the road towards the shore.
There are fewer and fewer of these teeth every year, so it's worth hurrying up to see them.
MRU is not only Pniewo and Boryszyn.
There is a forest parking lot near road no. 137 (Pieski-Międzyrzecz), from there you can easily get to the road.