The entrance to the south chamber is orientated to the setting sun around the time of the winter solstice, many observations have been made that confirm the sunlight penetrates the passage and chamber, reflecting off the back wall of the main chamber into a side chamber, illuminating some intriguing carvings, shown below.

The entrance to the south chamber is orientated to the setting sun around the time of the winter solstice, many observations have been made that confirm the sunlight penetrates the passage and chamber, reflecting off the back wall of the main chamber into a side chamber, illuminating some intriguing carvings, shown below.