Tempe's "A" Mountain is not the city's only painted butte. Head west on Broadway Road, and look south just before you hit the I-10 freeway, to check out the side of Double Butte -- about halfway up.

The wall, which runs through a narrow mountain pass in the eastern province of Shandong, was first constructed in around 800 B.C. At that time, it was about 33 feet (10 meters) wide. But it was ...