 It is possible that there was a facade in front of the chamber , as is evident at other chambered tombs in Britain , such as West Kennet Long Barrow and <unk> 's Smithy . It is also possible that there was a portal stone atop the chamber , as was apparent at Kit 's Coty House and Lower Kit 's Coty House . Many of the larger slabs of stone that have fallen down the slope on the eastern end of the monument may have been parts of this facade or portal . 
