“Incredibly, there are places that are now less developed in the Western United States than when the Pony Express went through over 150 years ago! Pictured below is Three Crossings Station in Wyoming. The black and white photo is from 1870 and the colored photo (of the same area) is from this year!”
[N.B. Source of the name? “Wagon-train emigrants traveling the Oregon Trail along the Sweetwater River in the mid-1800s came to a place called the Narrows, where steep hills close to the river forced the trail to cross it three times within two miles.” From wyominghistory.org]