In this episode of Notes from Reservation River Jess Koski expresses his skepticism about the name and signage for “Five Mile Rock,” a hunk of basalt anchored just east of Grand Marais, Minnesota. He ...

Basalt was a particularly hard rock compound that was difficult to cut ... Lake Bashplemi was diverted through tributaries leading to the Mashavera River and was located on a volcanic plateau ...

And these rock columns are very similar to other basalt rock columns throughout the Columbia River Gorge. What's the difference? (mysterious music) So it turns out there's two basalt stories here.