Stone Circle?

More a headstone I discovered. On my circuit today (3.69k) i passed this in what is no longer the Christmas Tree Wood. Steve and his young son Jack were busy unpacking rocks form their rucksacks and placing them carefully here. I risked saying "dare I ask" (from a safe distance of course). Steve told me that his grandfather's ashes were buried in this spot. And that they were making the stone circle to mark it. They will be back tomorrow with more stones.