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 for Thanksgiving Day, Christmas Day, New Year's Day, and during extreme weather conditions. Visitor center hours vary by season; check below for specific operating hours. Trails are open 365 days a year from dawn until dusk.

Summer Hours

From Memorial Day to Labor Day

8:00am –5:00pm

Winter Hours

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

9:00am –4:00pm