Castle Rock, Kansas, on the Smoky Hill, 385 miles west of Missouri River. - from our story 'Across the Continent on the Kansas Pacific Railroad in Photographs – 1867' Castle Rock, Kansas, on the Smoky Hill, 385 miles west of Missouri River. View The Article THE FLASHBAK SHOP Visit the shop Uncommon Christmas Cards now in the shop Prints – shop our unique art Editor’s picks Collect our postcards Free Newsletter First Name Last Name Leave this field empty if you're human: Shop our unique T-Shirts