Complex sentence: Begin at Historic Fort Walla Walla and proceed north on State Route 125, passing the Washington State Penitentiary, first used in 1888, cross the Touchet River, then turn east towards Prescott on SR 124.
Split into simpler sentences: Begin at Historic Fort Walla Walla and proceed north on State Route 125, passing the Washington State Penitentiary, first used in 1888. Cross the Touchet River, then turn east towards Prescott on SR 124.