I've always had this fascination about this kind of shot!
although I'd really like to see a BW version and darker, makin' it spooky, tho I know you didn't mean that on this shot (i guess)
I heard that in some Jewish cemetaries (kirkuts) located in cities such as Prague in the Czech Republic, there were layers of graves - the old ones were covered with soil when there was no more space around... Not to mention Tibetan sky burial :)
Cremation is the sweet answer , my father wished that because he thought about this too, so my mother opted for that too they are lying in a nice green plot an arms distance from each other. There is a nice remembrance book left open on the date of their deaths in a small church/chapel at the cemetry where their names are inscribed and you can leave flowers there and your thoughts .