As others (Mike Pitts and Aerial Cam) have published some thoughts on what was under the A344 I thought it might be interesting to put up some of my snaps, click any to embiggen.
And a fantastic shot from Aerial Cam:
|English Heritage Members||Free|
|Child, 5-15 years||Free|
|Authors:||Thom, Alexander; Stevenson Thom, Archibald; Strang Thom, Alexander|
|Publication:||Journal for the History of Astronomy, Vol. 5, p.71|
Excavation F. 5 feet long, 2 feet 10 inches wide, and 3 feet 3 inches deep.
This excavation was made at the side of the south-west pier, No. 54, of the south trilithon. .
The chalk rock was reached at the south-west side of the hole, about 3 feet from the surface.
About 1 foot below the turf, and to a distance of about two feet from the monolith, the entire space was closely packed with chippings of all the stones, together with two or three large lumps of sarsen, one of which measured 1 foot 6 inches by 1 foot 2 inches by 1 foot.
All these were more or less firmly cemented together with a calcareous concretion.
Splinters and pieces of sarsen hammerstones preponderated over those of ordinary sarsen, and the latter was found in much less quantity than the “bluestones;” but besides the clippings, however, several large irregular lumps of sarsen were also dug up, as stated above. As regards the “bluestones,” there was much more porphyrite than diabase, and least “fissile rock” and argillaceous sandstone.
Seven small fragments of ancient pottery were found about 1 foot 6 inches below the surface, and a few pieces of micaceous sandstone.