The I-68 road cut through the crest of Sideling Hill in western Washington County , Maryland , created one of the best geologic exposures in the northeastern United States . Revealing a cross section through a synclinal ridge, this massive cut has proven to be a significant educational and research tool and tourist attraction.
School Yard Geology
Don't let the name fool you. You'll find a series of lesson plans that you can easily adapt to map your backyard and even have fun with a geologic murder mystery.