This is a Bronze Age round barrow that rests by a road in a large field now, but it has much folklore associated with it. One story is about buried treasure with a mysterious soldier, related here in The History and Antiquities of the Hundred of Compton, Berks by John Snare, 1844:
There is a large tumulus in Stanmore field.. called Burrow Hill by the common people; who have a tradition that a man of that name was interred there in a gold or silver coffin. This barrow.. was opened during the month of April, 1815.
The common people state that an attempt to open this barrow was made about fifty years ago, but the design was frustrated by a dreadful hailstorm, with lightning, which compelled the labourers to desist. Thunder being also heard during the second attempt in question, the excavators were universally considered as the disturbers of the atmosphere; those that remembered the previous event, remarking, that “the undertaking seemed not altogether pleasing to the Lord!”
A terrific thunder-storm happening on the following day, the labourers were obliged to desist and take refuge in a neighbouring cottage; which had such an effect on the mind of one of the workmen employed, that he actually refused to come again. The recurrence of a thunder storm during this, the second attempt, was generally considered as remarkable; but such was its melancholy influence on this poor fellow that he became completely deranged, and never did a day’s work afterwards; being confined in St. Luke’s and other lunatic asylums for the remainder of his life. It is but justice to state, that Mr Long [the director of the excavation] had never heard of this melancholy result of his labours until the present year.
But of course there is fairy lore associated with the site as well;
The peasantry relate that it is inhabited by fairies; and that a certain ploughman having broken his share, and gone home to procure some tools, found on his return that the plough had already been mended.