The site consists of a single circular bank possibly built using cobble stones from the rivers "unlike other
henge monuments, where earth from the digging of a ditch is piled up to form a bank." There is no evidence of a ditch at Mayburgh. Clare estimates that the bank contains c20,000 tons of stones (despite many being taken away over the years for other uses), and also points to an alternative theory that suggests that the "bank may have been formed by excavation and re-arrangement of a glacial mound." The bank is up to high, and 50 metres across its base with a diameter of around . Contained within it is a single monolith high. According to
Thomas Pennant, in the early 18th century there had been four standing stones in the centre (marked on his 1769 plan, shown here), and a further four at the entrance, (plus a possible 'outer circle'), but his contemporary Robert Hutchinson, writing in 1773, gave a slightly different version: "
The inhabitants in the neighbourhood say, that within the memory of man, two other stones of similar nature, and placed in a kind of angular figure with the stone now remaining, were to be seen there, but as they were hurtful to the ground, were destroyed and removed." Clare notes that the centre is slightly domed and raises the possibility that the original site may have been a stone circle (destroyed) with four portal stones, with the bank being added later. The entrance is due east of the centre of the henge, and frames the rising of the equinoctial sun, which "suggests that the monument may reflect the cardinal points, as do the
Long Meg and
Castlerigg stone circles." The eastward-looking entrance also points to just north of King Arthur's Round Table and the only view obtainable from the interior of the monument is towards the ridge top of
Blencathra where the equinoctial sun sets. Mayburgh M6.jpg|The M6 runs directly past Mayburgh Henge Mayburgh Above.jpg|Mayburgh Henge from directly above Central standing stone, Mayburgh Henge - geograph.org.uk - 1531363.jpg|Central standing stone ==Dating and purpose==