Half way down http://www.bbc.co.uk/news/science-environment-37276221 http://www.bbc.co.uk/news/science-environment-37276221 is an overlay describing the parts.

Half way down http://www.bbc.co.uk/news/science-environment-37276221 http://www.bbc.co.uk/news/science-environment-37276221 is an overlay describing the parts. It sitting on its side, so I think you're referring to one of its three legs jutting out.