To think that nature caused this is ridiculous. The stone is propped with a rock that has a milky quartz stripe. No other rocks or boulders, grounded or otherwise, around this boulder feature this quartz pattern but the area of the carn where this rock was OBVIOUSLY taken from, which is about 200 meters to the SE, is covered with it. Carn Galva is the site that i have spent most time at & I know it quite intricately. Everyone knows this is an OBVIOUS & ARCHETYPAL NEOLITHIC PROPPED STONE AT A NEOLITHIC TOR ENCLOSURE -even Archeologists! - see the excellent book "Archaeology & Landscape at the Land's End, Cornwall" by Peter Herring, Nicholas Johnson, Andy M. Jones, Jacqueline A. Nowakowski, Adam Sharp & Andrew Young (all respected Archaeologists) where there is an in depth case study of Carn Galva featuring this boulder which is recorded as the most obvious of three Neolithic propped stones.
My advice would be to research & accept this because you're making a bigger & bigger fool of yourself on this subject.
Something is not right. This message is just to keep things from messing up down the road