Rock art

Took a trip out to Stoney Littleton near Radstock. One of the largest and best-preserved chambered long barrows in the country, apparently. Found it despite impossible English Heritage signage (and had superb ice cream from the little kiosk at the house by the car park when we came back down). Used the torches on our phones to light our way in and admire the masonry. So skillful to create cantilevered dry-stone vaults, and although the bones of the ancestors are long gone, it remains an evocative space. This ammonite fossil is in the stone that forms the western 'doorpost' at the entrance. I wondered what it meant to the builders who selected that special stone and placed it there 3,800BCE? What did they think it was? What stories did they tell about it?