The Thornborough Henges

The southeast entrance of the central henge.

The Thornborough Henges, just north of Ripon in Yorkshire, are thought to be a part of a ritual landscape once as important as Stonehenge.

The three large henges, each 240m in diameter, were built as a single concept around 2800BC. They form a slightly offset line which has been suggested to represent the stars of Orion’s Belt. This feature has also been proposed for the three stone circles in Orkney and the three pyramids of Giza.

The three henges, showing their arrangement akin to Orion’s Belt. (Tony Newbould, Wikicommons).

The southern henge is now almost entirely destroyed. The central henge comprises an outer bank, surviving to three metres high in places, then a wide berm and an inner ditch with two causeways, now barely visible. The inner area, which has the feel of an inner sanctum and was perhaps screened with timber, comprises around half the area of the henge. The two entrances align with the midwinter sunrise and the midsummer sunset.

The ditch and causeway of the northern henge.

The northern henge, which is now covered with trees, is the best preserved. Like the other henges, it comprises an outer bank with an inner berm around 15 metres in diameter, then a ditch surviving to around four metres deep. This ditch is perfectly dry, even in the wettest periods, so presumably was never intended to contain water. Perhaps these ditches were a statement of partition, segregating the innermost area of the henge where only a select few were permitted, from the outer area where all people could congregate.

The entrances of this henge again align with the midwinter sunrise and the midsummer sunset, and the central henge lies in their direct view. The northern entrance opens out onto the gentle slope of the hillside which soon disappears from view. This seems to emphasise that this is the end of the monument.

The bank and inner berm of the northern henge.

Thornborough was important long before the henges were built. Two cursuses, a little-understood type of monument of which the most famous is at Stonehenge, lie nearby and predate the henges by perhaps a thousand years. One passes by the north henge, and the second passes beneath the central henge and continues towards the river. It is suggested they are a commemoration of an ancient processional way.

The central henge, looking towards the northern henge in the distant trees.

The henges are on a fairly flat hilltop where they would have been prominent from a wide area. They are a few hundred metres from the River Ure, one of two important rivers in Yorkshire which were a focus for ritual monuments, on slightly higher ground so as to be safe from flood risk. On the horizon to the east is the scarp of the North Yorkshire Moors, and the henges, once coated in brilliant white gypsum, would have been clearly visible from this high ground. And it is from this point that their arrangement, reflecting Orion’s Belt, would have been noticeable.

The River Ure near Thornborough

Thornborough is on one of the major ancient routeways from the Midlands to the North, and also to the East to the Vale of Pickering. This is the point where the land changes from the vast flat plain of York to the hills of the Yorkshire Dales. Another reason for choosing this site is the band of underlying gypsum in the area, especially prone to forming huge sinkholes without warning which can on occasion swallow houses. This dangerous and unpredictable phenomenon, perhaps associated with openings to the chthonic otherworld, is likely a reason for the henges’ location.

A sinkhole in a limestone area. (Peter Dean, Wikicommons).