Operating Hours & Seasons

The mounds can be observed any time of year. They are even visible when covered in snow.

NPS Photo

 

The visitor center is open year-round except Thanksgiving Day, Christmas Day, New Year's Day, during extreme weather conditions, and as indicated below. Because visitor center hours may vary by season, check below for the specific opening and closing times during the summer and winter seasons.

The park's trails are open 365 days per year, from dawn until dusk.

Summer Hours

From Memorial Day to Labor Day

9:00 am—4:30 pm daily

Winter Hours

From the Tuesday after Labor Day to the Sunday before Memorial Day

9:00 am—4:30 pm Thursday through Sunday
Closed Tuedays and Wednesdays