You don’t need any signs to explain what you’re looking at when you’re near Arizona’s Kayenta Mine. All you need is a copy of Ed Abbey’s The Monkey Wrench Gang.
There’s a stretch of I-70 in Utah which runs through a landscape nearly bleached of color. Then, once in the town of Green River, there is a former gas station repainted in bright yellow and orange hues with a truck reading MEXICAN FOOD and a sign reading TACOS.
San Diego is huge: over a million people. It used to be in Mexico. The weather attracts young adults and bums from pretty much all of the southwest.