The first 2003 Colorado Scientific Society brown-bag field trip was held on Saturday, June 21. The trip examined the Upper Cretaceous, lower Paleocene, and early Eocene rocks of the Denver Basin; it was led by Bob Raynolds of the Denver Museum of Nature and Science. Bob vividly linked the stratigraphy, tectonics, and groundwater resources of these rocks into a comprehensive story of the Laramide development of the Denver Basin and the Front Range. Highlights of the trip included a grand overview at Daniels Park, a climb to another spectacular overlook on Wildcat Mountain, a walk into the depths of Castlewood Canyon, and finally a view of the lower Eocene paleosol near Parker. The tripís 19 participants enjoyed the first non-rainy Saturday in June.