Helens eruption, the deadliest and most economically destructive volcanic event in the history of the United States. Fifty-seven people were killed; 250 homes, 47 bridges, 15 miles km) of railways, and 185 miles km) of highway were destroyed
in the resort town of skagen, you can watch an amazing natural phenomenon. this city is the northernmost point of denmark, where the baltic and north seas meet. two opposing tides in this place can not merge because they have different densities.