The word for this sort of structure is apparently a menhir: ttps://en.wikipedia.org/wiki/Menhir. The article calls it the tallest in the UK but its Wikipedia page calls it the second-tallest. This is the actual tallest, interestingly also in Yorkshire: https://en.wikipedia.org/wiki/Rudston_Monolith.
https://en.wikipedia.org/wiki/Stone_(unit)
[0] https://hgvlgvtraining.co.uk/wp-content/uploads/2024/11/weig...
[1] https://freesvg.org/img/B13a.png