This seems like as good a place as any to speculate on the upcoming films. I saw The Force Awakens for the 3rd time this morning and I never noticed this on the first 2 viewings, but the scene at the end where Rey meets Luke for the first time, it would appear that Luke is standing in front of a make-shift grave and there is a flat slanted stone that looks like it could be crude headstone. Could this belong to a Mrs Skywalker? or Rey’s mother ? or both?
Aye, my guess it is the grave of Luke’s wife - who was also Ray’s mum. I’m usually wrong on these guesses though…
pics deleted - apologies.