For now, a tentative plan is on hold that would turn the legendary Oak Flats area just east of Superior into a $60 billion mining pit the size of Meteor Crater. What does that mean for you? If the weather is anything resembling cool, throw some day-camping gear in the cruiser and get ready to enjoy a rock-climbing picnic. Just exploring the maze-like canyons strewn with giant rocks is fun, but climbers find the place a paradise of bouldering problems waiting to be solved. No rope is needed — just your rock shoes and chalk bag. Hundreds of short routes featuring overhangs, pocket-lined fines, and ultra-crimpers abound; the climbing area developed, in large part, from years of hosting the now-defunct Phoenix Bouldering Contest. If you're too tired to drive the two hours back to the Valley after a full day of blowing out your forearms amid the tree-and-cactus-filled wonderland, you can spend the night — for free — at the adjacent Oak Flats Campground. Wait too long to visit, and the whole place might be rubble.