My uncle pointed this out to me; he and a friend are trying to get something like this started in Florida. The idea is to create cemetaries where those who have passed can be buried in a natural setting, probably sans headstone, without the ten thousand dollar lead-lined casket (let this be as legal a notice as an anonymous blogger can leave--I wanna be cremated).
It's a great idea. Green Options has more info, and there's an example of same run by some monks in Georgia here.
And of course, before you are buried with nature you hopefully will live a good life and die with dignity. You've probably all signed the petition already, but of course the First Freedom First people are all about death with dignity.