I know typically the casket is lowered into the grave at the end of the burial service, but when do they fill it in? If someone were to linger at the cemetery after the service, would they be likely to see the grave filled an hour later? Two? Or would it happen that night or the next day?
Bonus: If they were to witness the filling in of the grave, what does the process look like/how is it done?
Tried googling "how long to graves stay open" etc. but couldn't seem to hit the right phrase.