Quartzsite is the most popular place to boondock in the west of the US. Many full timers spend winter season here and every year in January various groups of full time travelers meet to share their experiences and celebrate the lifestyle. The whole town transforms into a huge flea market and you can buy a lot of funky stuff here. It's quite unusual and unique experience.
KOFA National Wildlife Refuge
The name KOFA comes from the King of Arizona mine located somewhere along the mountain range. Nice and very peaceful boondocking place, but not much to do, except for The Palm Canyon, the most famous attraction in the area. It is the only place in Arizona where native California Fan Palms can be found. The trees grow in a steep, narrow ravine which is in shadow nearly all of the day. Fairly easy hike gets tricky up in the ravine off the main trail, which we of course had to try. Luckily, we have survived.
The second attraction we found in this area was "Koh-Kopelli Spiral". A spiral labyrinth scraped out of the desert floor, leading to a pile of rocks in the center, along with some trinkets left by people who visited. No one knows who made it, some speculate that it was built by a French artist. The unknown makes it even more interesting. And I have to admit that it was a lot cooler than I expected it to be.