article_snippet: The Crossrail team unearthed about 20 Roman skulls which were found buried in clusters in the sediment of the historic tributary.
article_snippet: The Crossrail team unearthed about 20 Roman skulls in 2013, which had been buried in clusters at Bedlam .
article_snippet: Working under the direction of archaeologists, the construction workers carefully removed about 20 Roman skulls, as well as a collection of ancient Roman pottery.
article_snippet: For safety reasons the direction of archaeologists had to leave the work to the tunnellers as about 20 Roman skulls were buried as deep as six metres below ground.