SCANDIA, Minn. — Native Americans, Swedish immigrants and even cattle thieves have all taken shelter in a little spot along the St. Croix River. Nowadays, Knapp's Cave near Scandia is still a ...

Note: As of December 2024, the park is closed until further notice. The Camuy River flows through the third largest cave system in the world — so extensive, in fact, that it underlies parts of ...