Wow, looks like a bonanza. Let us know how the pieces work out in your tank.
No hope for an area like that here in Arizona. What we DO have, though, is Cholla, which is becoming quite the accessory for Plecos - both forr chewing and for hiding spots. I haven't ventured out in search of usable pieces, yet, but plan to do it next time I travel through a Cholla "forest" (they aren't native at my altitude).