The Crossrail archaeology programme has also unearthed its first Bronze Age finds - although these won't form part of the exhibition.
Two wooden stakes, cut by early London hunters with an axe, and a hammer stone have been discovered at excavations at Plumstead.
Historians believe these may have been used to build a large network of timber pathways across east London, which may have made it easier for hunters to catch animals living in the lush wetlands some 3,500 years ago.
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Visitors will be able to hop on board 5972 Olton Hall, which weighs 75 tonnes, as part of a new exhibit opening at the attraction in March.