Fox Science Preserve sits between Ann Arbor and Dexter in an old gravel quarry. The machines that dug deep into the soil are now gone, leaving behind a scene not too different from the glacial moraines of 12,000 years ago. This rocky and barren surface soon was recognized as a natural classroom for the study of biological succession. Teachers, students, and parents began exploring the boulders and limestone surfaces, observing as nature begins its transformation of the empty quarry into a fully functioning ecosystem.