Follow in the tradition of Edwin G. Cassedy, the Smithsonian artist who sketched the terrain at Lindenmeier during the Smithsonian visit to the site 80 years ago. Hike the Towhee Trail for great views. Bring sketching pads and hiking boots. Meet at the north parking lot. 2-3 miles, moderate. Bring water, snacks, and lunch. Taught by Gary Raham, natural science writer and illustrator. Afterwards, join in the celebration of Soapstone Prairie, "Looking Forward by Looking Back," featuring presentations and activities on site. REGISTRATION REQUIRED at naturetracker.fcgov.com.