Pompeys Pillar National Monument is open for the season.
The monument reopened this weekend, and officials say it will be open seven days a week.
Monument Manager Jeff Kitchens tells KULR-TV that exciting events are planned for this summer, including the annual Clark Days celebration on Aug.  2-3.
Pompeys Pillar was proclaimed a national monument in January 2001. Prior to its monument status, it was a designated national historic landmark in 1965.  It is located along the Lewis and Clark National Historic Trail.