A view of the Rudston Monolith at All Saints Church in Rudston, England.  Standing vertically at over 25 feet, it is the tallest monolith (standing stone) in the United Kingdom.  The stone is slender, with two large flat faces. It is 5 feet 9 inches wide and just under 3 feet 3 inches thick.  In 1773 the stone was capped in lead; this was later removed, although the stone is currently capped.  The weight is estimated at 40 tonnes & the rock is made of gritstone.

The nearest source for the stone (Cayton or Cornelian Bay) is 9.9 miles north of the site, although it may have been brought naturally to the site as a glacial erratic.  The monolith dates to the Late Neolithic or Early Bronze Age.  There is one other smaller stone, of the same type, in the churchyard, which was once situated near the monolith. The Norman church was almost certainly intentionally built on a site already considered sacred, a practice common through the country – indeed the name of Rudston comes from the Old English "Rood-stane", meaning "cross-stone", implying that a stone already venerated was adapted for Christian purposes.

More info here: https://en.wikipedia.org/wiki/Rudston_Monolith