Which formation, Łebsko Lake or Coatepeque Caldera, is part of the Słowiński National Park?
Łebsko Lake: Łebsko Lake (German: "Lebasee" ) is a coastal lake in the Pomeranian Voivodeship of Poland. Coatepeque Caldera: Caldera De Coatepeque (Nahuatl "cōātepēc", "at the snake hill") is a volcanic caldera in El Salvador in Central America.
Łebsko Lake