An ancient Irish tomb may have been built with a light chamber
aligned not only to the sun, but to the moon as well.
Building it would have required many years of observations of
the motions of the moon by the tomb's architects. The tomb could
also explain the moon-inspired names of local landmarks.
The tomb's 'lightbox' is only the third ever to be discovered and is
by far the most complex. It reveals the astonishingly-detailed
astronomical knowledge of the ancient people.
This find ties in with that made by a team of archaeologists
from Glasgow University when they discovered a lightbox in the roof of a
prehistoric tomb in Orkney, Scotland.
It allowed the rays of the sun to reach the innermost part of
the tomb at the start and end of the winter. At that time, only one
other lightbox was known, at the Newgrange Neolithic complex in
The latest, and most remarkable yet, was revealed by Martin
Byrne, a researcher and artist in County Sligo, Ireland. His work on
the Neolithic tombs at Carrowkeel suggests they were positioned so
that the light from the Moon could peep into the inner chamber at