Features
Glacier and Badlands byways: reading rock signs where plains meet peaks
Going-to-the-Sun Road and the Badlands Loop Road show how brown byway markers and wayside panels explain glacial and sedimentary rock across one long drive.
Topic
roadside geology
Features
Kansas and Nebraska byways: limestone, chalk and the signs that mark them
Limestone in the Flint Hills, Niobrara Chalk near Monument Rocks and Sandhills sand: which Kansas and Nebraska byway signs name each rock and where to pull over.