The passage viewed from
beneath the portal lintel. Note the dry stone walling
extreme right, this is the original facade of the primary cairn. The
passage was
extended by 2.4m very soon after the primary cairn was completed, so this
original
facade is now buried behind the cairn material added to accommodate the
increased
passage length. The original entrance to the primary cairn stood roughly where
the
shadow-line crosses the passage in the above photo.