Cleaven Dyke

Removal of whins from the cursus and trees either side have given an improved view of the monument and possible orientation on North Ballo Hill . The declination is -15.8 and indicates where the sun would rise on the cross quarter days of Imbolc and Samhain whether this was intentional or mattered to the builders is open to debate .Originally considered to be a Roman vallum . It extends 2.3 k although it may originally been even longer .
RC dates from 1993 confirmed it being pre Roman giving a date of 3600 BC.
The building of the monument began at the NW with a sub circular burial mound ,subsequently an 80 m –long barrow was added to the SE. a bank on the same alignment as the barrow followed by realignment to the S.The monument was then constructed in segments with gaps in the bank and ditches breaking the monument into five sections.