TIL there are 16,000 acres of sand dunes in Alaska - Kobuk Valley National Park

https://www.nps.gov/kova/learn/nature/great-kobuk-sand-dunes.htm

#til #todayilearned

https://www.reddit.com/r/todayilearned/comments/1bd0s9c/til_there_are_16000_acres_of_sand_dunes_in_alaska/