On the evening of the 31st of December 1900, one of the outer trilithons (22 on plan), with its lintel, was blown down in the course of a severe storm, this being the first collapse since the 3rd of January 1797, when one of the fine trilithons 58) of the horseshoe fell.
In diameter and approached from the northeast by a road or avenue which can still be traced by banks of earth, is an outer circle of trilithons (ioo ft.
Within this circle and concentric with it is another, formed of smaller "blue stones," originally forty in number, but only a few of which now remain in situ; within that was a horseshoe of five huge trilithons formed by ten monoliths with their imposts (all sarsens); and within the horseshoe was an inner horseshoe of "blue stones," originally nineteen in number.
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