Now we get the real story: turns out Camp Green Lake is "a camp for bad boys."
In fact, the boys at the camp have to dig a hole every day, in the hopes that it will make them good boys. Hmm.
Stanley Yelnats, for one, chose to go to Camp Green Lake. After all, the alternative was going to jail; plus, he's poor and has never been to camp before. Sounds like a good choice, then.