The walrus found in a human grave

Who put giant walrus bones in an old human grave in London?
In 2003, during the building of a major London rail link, archaeologists discovered the strange sight of giant walrus bones buried in an old human graveyard. Just how did they get there? BBC Reel brought two of the experts involved together once more, to take another look at this modern mystery.

Guatemala's Mayan World

Rediscovering this ancient civilsation