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Ken Williams > Some fading carvings from inside Cairn S
Ken Williams > Half six in the morning, Cairn T on top of Carnbane East in near darkness. To view the sequence of photos as larger versions, click on the photo to the left and click the 'next' button to proceed to the following image.
Ken Williams > Hazy sunshine streams down the short passage, the beam hitting the backstone is now shaped by the orthostats and lintel in the passage and also the sill stone in the foreground. This arrangement creates a roughly square beam of light that first frames a circular design commonly called a 'sun symbol' on the upper left of the backstone in the rear chamber before widening and elongating to illuminate the whole stone before shrinking again to frame a very similar design on the lower left hand side of the same stone.
Ken Williams > The wispy cloud diffuses the sunlight, the whole of the rear chamber is lit up by a golden glow.
Ken Williams > As the cloud passes, the sunlight is strongly focused on the backstones carvings. By this time the beam has begun to shrink and move lower, onto the sill stone of the rear chamber.
Ken Williams > The beam of light is surprisingly strong, reflected light causing the whole passage and chamber to glow. After spending time in the gloom of the cairn, the effect is very dramatic.
Ken Williams > In this photo you can see how the beam is shaped into a roughly square shape, you should be able to make out the symbols carved into the sill stone and chamber orthostat.
Ken Williams > A narrow beam of light signals the ending of the illumination of the heavily carved backstone, with the unpredictable weather at the time of the equinox in September and March, this could be the last time the sun shines directly onto the backstone for many months, if not years. More often than not, the trek up the mountain in the dark is not rewarded by this fascinating show of engineering and astronomy.
Ken Williams > The sun is now moving onto the sill stone and orthostats in the main chamber, these stones also bear carvings where the sun is travelling.
Some fading carvings from inside Cairn S
Ken Williams > Some fading carvings from inside Cairn S
Some fading carvings from inside Cairn S
See photo in original gallery.
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