![The Record show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/059/461/small/kuow-fm-the-record.jpg)
Summary: Jeannie Yandel talks with University of Washington geology professor Terry Swanson about glacial erratics and how one might be blocking the tunneling...
Summary: Jeannie Yandel talks with University of Washington geology professor Terry Swanson about glacial erratics and how one might be blocking the tunneling...