What is richard diehl?

As an AI language model, I don't have access to comprehensive information about all individuals. However, based on my research, Richard Diehl is a professor of Anthropology and Archaeology at the University of Alabama, with a research focus on the pre-Columbian cultures of Mesoamerica. He has conducted extensive fieldwork in Mexico, Guatemala, and Honduras and has published numerous books and articles on the archaeology and history of Mesoamerican civilizations. Some of his notable works include "The Olmecs: America's First Civilization" and "The Maya and Their Central American Neighbors: Settlement Patterns, Architecture, Hieroglyphic Texts, and Ceramics."