Complex sentence: Unaweep Canyon is a geologically unique canyon that cuts across the Uncompahgre Plateau in western Colorado: two creeks, East Creek and West Creek, flow out of opposite ends of the canyon separated by the almost imperceptible Unaweep Divide.
Split into simpler sentences: Unaweep Canyon is a geologically unique canyon that cuts across the Uncompahgre Plateau in western Colorado. It is unique because two creeks, East Creek and West Creek, flow out of opposite ends of the canyon, separated by the almost imperceptible Unaweep Divide.