A couple of metal beams. That’s it.

The Czech hedgehog is a simple antitank defense that, for Americans, Europeans and Russians alike, evokes images of World War II. Allied soldiers had to navigate beaches sprinkled with them during the Normandy landings. Moscow has a monument of Czech hedgehogs to mark the farthest that Nazi soldiers got in their advance to the capital city.

Now Czech hedgehogs are a common sight in Ukraine as the country puts every effort into slowing down the Russian invasion. They dot the beaches of Odesa, they fill the streets of Kyiv and they are present at key checkpoints. Many Ukrainian civilians are making them as a sort of DIY antitank barricade throughout their cities and towns.

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Czech hedgehogs are made from two metal beams that are sealed together at angles. A third beam is added to allow the hedgehog to keep its shape and to function even when moved or tipped over. Any vehicles attempting to drive over the beams become stuck or possibly damaged — stalling the enemy from making further advancements. Such a delay makes the vehicle more vulnerable to more advanced antitank weapons, like shoulder-fired missiles and drones.

Read more: yahoo