sentences:  The isolation of the region came to an end in 1898.The Prescott & Eastern Railroad was built from near Prescott to Mayer (later it was extended all the way to Crown King).The followed along the Agua Fria and built sidings at Cherry Creek Siding (Dewey Post Office), and Val Verde, the site of a smelter built by the Val Verde Smelting Company—a large plant at the site of Humboldt.