We had this rock sticking up near the driveway. The thing poked up about 8 inches and was right in the way of where we wanted to put a parking spot. Last year I got hold of it with a Case 540 backhoe and the thing turned out to be about 16 feet long, much bigger than I could pull with the backhoe. I tried drilling around it with a hammer drill, but it was granite (VERY hard stuff) and I would not have lived long enough to finish the job.
So I used the redneck method.
I built a fire around the rock and let it cook for about 3 hours.