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Tlikakila River Delta in Lake Clark National Park, Alaska

Tlikakila River Delta in Lake Clark National Park, Alaska (© Dawn Wilson Photography/Getty Images)

Tlikakila River Delta in Lake Clark National Park, Alaska (© Dawn Wilson Photography/Getty Images)

Preserving Alaska's natural beauty

On this day in 1980, the single largest expansion of protected lands in history doubled the size of the US National Park System. Prior to that day, Alaska had no national parks, but now the state has eight, plus numerous monuments and preserves that protect more than 63 million total hectares. When U.S. President Carter signed the Alaska National Interest Lands Conservation Act, the public was granted the right to appreciate stunning locations like the one in today's photo: the braided river delta of the 82-kilometre long Tlikakila River in Lake Clark National Park.
© Dawn Wilson Photography/Getty Images