Located on the east coast of Ireland about 50 km from Dublin, near the city of Drogheda, is one of the most interesting archaeological sites in Europe, Brú na Bóinne, which hosts the remains of 40 tombs and mounds of the prehistoric period.

This archaeological site which is spread over an area of ​​about 8 square kilometers, in the valley of the Boine river, preserves the remains of a civilization that came before the Celtics.

The main attraction of this place is Newgrange, a corridor tomb estimated to date back to 3200 BCE, which hosts numerous drawings engraved in the rock in its insides.

Like the many other sites scattered through Great Britain, but also throughout the ancient world in general, the subjects and figures engraved are the recurring spiral motifs, along with the cup and circle design.

The ancient rock art becomes particularly fascinating during the winter solstice, as the tomb was built in a way that when the sunlight enters the tomb on this day, it enlightens a huge spiral motif in particular.