When working out the co-ordinates of the 'Convergence' in Thor: The Dark World, Erik Selvig claims that "the ancients left us coordinates" in the form of symbolic 'markers'.
Stonehenge is listed as one (makes sense, I suppose), so is Snowdon (a mountain range? How is this an ancient 'marker', but whatever) and this unexplained spot off the coast of Southend-on-Sea, famous for... erm... the world's longest pleasure pier? The Leigh-on-Sea Fishing Festival? Being the spiritual home of comedian Lee Evans?!
What is its 'historic' significance? It seems a totally arbitrary choice, when Britain is filled to brimming with neolithic landmarks.
Is this supposed to be an incredibly subtle joke? Or are we missing something?