Hollywood graves are never oval. Seriously… Check out just about any Hollywood movie where there is a guy in a hole digging a grave. It almost always has a perfect rectangular shape (just like as would be made by a backhoe). Hmmm. I know whenever I dig my graves, I use a rounded shovel which means the grave corners are almost always round. Truly, most makeshift graves need to be dug in a hurry so who has time for sharply defined rectangular corners?