Author has a strong background in geology and natural history. He can offer details on these aspects of Yosemite, making the caption information more substantial than just a label.
Eileen Crist is Associate Professor of Science and Technology Studies in the Center for Interdisciplinary Studies at Virginia Tech, the author of Images of Animals: Anthropomorphism and the Animal Mind,and the coeditor of Scientists Debate Gaia(MIT Press, 2004).