These walls are built from shredded tires mixed into rubber-rich panels that soak up traffic noise and keep thousands of tires out of landfills
I've posted about tires getting pulled out of rivers, lakes, reservoirs, streams etc...
I've posted about tires being dumped off bridges into canyons, farms, and country roads where it's called Fly Tipping
And there are so many examples of guys getting paid to take tires away - just make them disappear, that we don't hear about. Imagine how much better the system would be if the tires everyone dumps in alleys, etc were worth 10 bucks apiece - like all the copper that the meth freaks steal, and got cleaned out of city alleyways, to get turned in for the refund, just like cans, bottles, etc.
I'm pretty sure that's why so many states put that 5 or 10 cent refund, or CRV, on the garbage we toss - so that the homeless who go trash can to dumpster, all day long, through city alleys and parks, and bring everything that they can make make money from to the recycle drops.
At least, they do here in San Diego. Guys come up from Tijuana with trucks, and load up washers, fridges, heaters, AC units, and mattresses. Everything they can get money for when they get it back into TiJuana.