I have read that the Y Z holes were dug by mistake in about 1700BC which was much later than when the Stonehenge Sarsen Circle was erected. Then strangely enough they did not fill then in but left them to fill in naturally over time. Very strange! The explanation does not sound right.

One other possible explanation!

I believe the Y Z holes where dug at the same time as the rest of the building. They had stones in them which were footings for the buttresses which surrounded the building. See - Youtube - (Bruce Bedlam’s Stonehenge). The Y Z holes only became holes only when the stones were removed - years later.

I told a farmer from Cornwall about these stones. The size of them is 5ft long 3ft wide and 3ft thick. The Y Z holes look like bath tubs on the outside of Stonehenge. He asked me - did I know how to remove a stone from the ground? He explained! You dig a small hole at one side of the stone and build a fire. The stone will crack and then it can then be removed easily.

What he did not know was that most of the Y Z holes have had fires on one side of them. The Archaeologists say they were sacrificial fires but I think the farmer’s explanation is more plausible.