The 0.8-mile stretch near M-89 and U.S. 131 was degraded by paper mill pollution and the dam, according to the Michigan ...

The Lava River Cave outside of Bend is a mile deep and 60 feet tall. Here's how to explore Oregon's longest lava tube.

Lake Calhoun project will replace two dams and a timber-frame bridge, all installed in 1938, and improve recreation access, ...