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What's the deal with all the fortress fences in Arizona??

What’s With All the Backyard Concrete-Block Fences in the Valley? - Arizona Oddities

Q: What is it with the “wall phenomenon” around here? Who invented the idea of backyard concrete-block fences and why? A: Funny you should ask. We are just back from a trip to the ancestral estate in the Midwest, and one of the first things our charming traveling companion asked—after she...

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