An amazing cover from UNO Vienna, depicting 4 stamps of the same type celebrating the
Everglades National Park, in USA.
Everglades National Park is an American national park that protects the southern twenty percent of the original Everglades in Florida. The park is the largest tropical wilderness in the United States and the largest wilderness of any kind east of the Mississippi River. An average of one million people visit the park each year. Everglades is the third-largest national park in the contiguous United States after Death Valley and Yellowstone. UNESCO declared the Everglades and Dry Tortugas Biosphere Reserve in 1976 and listed the park as a World Heritage Site in 1979.
