John Thorn Nevada USA topo missing contour lines
Bought and downloaded John Thorn Nevada USA topo. At the north edge of Las Vegas and to the northwest are at least 60 miles of country where the contour lines are missing. They reach a north/south and east/west line in this area and dissapear. I deleted and re downloaded, same thing. My daughter lives in Las Vegas and I bought it for this area. Any help or suggestions or help appreciated.