Grubstones

The Grubstones circle is located on Burley Moor (to the east of Ilkley Moor).^[1] It is situated below the top of the hill on a gentle south facing slope.^[2] The circle is just over 800 metres (0.5 mi) south-east of the Twelve Apostles.^[1] South-east of the circle there are several large cairns including The Skirtful of Stones.^[3]

The circle has a diameter of about 10 metres (30 ft).^[3] It is almost perfectly circular with twenty surviving stones.^[3] The stones are set on the inside of a low bank, about 1.8 metres (6 ft) wide.^[1][2] The circle has been described variously as a cairn circle, a ring cairn enclosure, or a stone circle.^[4] One third of the circle on the south side has been destroyed by shooting butts.^[1] Four large loose stones in the interior may have come from this break.^[2] The interior was excavated circa 1846 which revealed a cremation, accompanied by a flint spearhead.^[2]

In the 20th century there was additional damage in the form of a subrectangular earthwork mound said to be an "orgone accumulator".^[2] Orgone is supposed to be a vital energy or life force which informs the universe, and which can be collected and stored in an orgone accumulator for subsequent use in the treatment of illness.^[2]