Ah, you will say, but isn't this a castle motte? Well it is, but as the scheduled monument record allows, the mound was dug into in the 1840s, and it's thought that it was built onto a handy mound that already existed, a barrow.
Mr. W. Beamont, in a paper read before the Lancashire and Cheshire Historic Society, on the "Fee of Makerfield," etc., in March, 1873, says, - "On the west side of this rivulet" (the Golbourne brook), "where the red rock rises above it, there is scooped out a rude alcove or cave, which the country people assign to Robin Hood [...]". The stream near Newton has been blocked by an earthen embankment, and the "Castle Hill" now overlooks a beautiful artificial lake, with three branches. Robin Hood's cave, alas! had to be sacrificed; four or five feet of water now placidly flows over the site of its former entrance.
[...] The writer further informs us that the "Castle Hill is said to be haunted by a white lady, who flits and glides, but never walks. She is sometimes seen at midnight, but is never heard to speak.
The Rev. Mr. Sibson adds -- "There is a tradition that Alfred the Great was buried here, with a crown of gold, in a silver coffin."