Until the 17th century the peninsula was a chain of islands that formed a strip of land only during the summer; during the Battle of Hel in 1939, Polish forces dynamited the peninsula at one point, turning it into an island.
The peninsula was a chain of islands. This was until the 17th century. These islands formed a strip of land only during the summer. Polish forces dynamited the peninsula at one point. This was during the Battle of Hel in 1939. Polish forces were turning it into an island. This was during the Battle of Hel in 1939.