Windmill Hill Cavern
... that Windmill Hill Cavern, which provided the first scientifically accepted proof that humans and now-extinct animal species coexisted in Britain, was found accidentally while searching for a lost pickaxe?
... that <b id="mwVQ"><a href="./Windmill_Hill_Cavern" id="mwVg" rel="mw:WikiLink" title="Windmill Hill Cavern">Windmill Hill Cavern</a></b>, which provided the first scientifically accepted proof that humans and now-extinct animal species coexisted in Britain, was found accidentally while searching for a lost pickaxe?