The Clapham Junction Triangle is part of the Cart Ruts main area.
How does nature create such perfect triangles and lines? This equilateral Cart Ruts Triangle is beside the longest of the Cart Ruts at Clapham Common. This Cart Rut is slightly strange in that one half is more of a Cart Track (flat) whilst where this rock equilateral triangle is found it is much deeper, so has the appearance of Cart Ruts. The area west of the Cart Rut part (northern slope of the rolling hill top) has other Electroblemes including Cart Ruts Boxes.
This triangle is made of lines and is close to being another perfect triangle shape. It is to the west side of the main Cart Ruts area, below the level of the Clapham Junction Triangle and seems to be slightly removed from the Cart Tracks.