Beneath this spot on 28th September 1992 was discovered a 3,600 year old Bronze Age boat now preserved and displayed in Dover Museum by the Dover Bronze Age Boat Trust

One of fewer than 20 Bronze Age boats so far found in Britain. It dates to 1575–1520 BC, which may make it one of the oldest substantially intact boats in the world https://thedoversociety.co.uk/blue-plaques/4-2