Triangulating from the cairns…
... drainage of the East River, a stream that flows from the mountains above Crested Butte, Colorado , and on whose banks the Rocky Mountain Biological Laboratory sits. They used a high-resolution hydrological model that maps what's going on 400 meters... ... underground. The East River Valley, northwest of the historic town of Gothic , home to the Rocky Mountain Biological Laboratory. The mountain with the pointed peak in the distance is Mount Crested Butte. Photo credit: Mark Stone/ University