The National Park Service has released the dates for fee-free days at all sites.
The 2021 entrance fee-free days are:
- Monday, January 18 – Martin Luther King, Jr. Day
- Saturday, April 17 – First Day of National Park Week
- Wednesday, August 4 – Great American Outdoors Act anniversary
- Wednesday, August 25 – National Park Service Birthday
- Saturday, September 25 – National Public Lands Day
- Thursday, November 11 – Veterans Day
Note that the entrance fee waiver for the fee-free days does not cover amenities or user fees for activities such as camping, transportation, or special tours.
Natural History Wanderings 
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