If you listened to The Curse of the Petrified Forest, our episode on the strange happenings surrounding people who stole rocks from Petrified Forest National Park, you know that the park faced a major identity crisis - people thought all the petrified wood was gone. It isn't, of course, it's pretty much all still there - but theft of small stones is still a problem for the park, just as theft and vandalization are problems throughout the National Parks System. On this episode, we take a look at theft in another Arizona park, and how authorities are using old-fashioned detective work as well as 21st-century technology to catch would-be cactus thieves.