Joe Amon, The Denver Post
The last light of the sun catches mouton tops near Bear Lake in the Rocky Mountain National Park on Jan. 23, 2015. 
Getting your player ready...
The first free entrance day of 2020 at Rocky Mountain National Park will be Martin Luther King Jr. Day on Monday, Jan. 20.
Future free days in 2020 include the first day of National Park Week on April 18, the National Park Service anniversary on Aug. 25, National Public Lands Day on Sept. 26 and Veterans Day on Nov. 11.
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All National Park Service units that charge admission fees will be free those days.
Fees for camping, tours and concessions will still apply, but entrance fees will be waived on the free days.
Read more on the .
