Environmental protests to highlight climate change have seen motorways blockaded by protestors lying in the road and soup thrown over a priceless Van Gogh in an art gallery.
But back in 1997, one creative but dangerous protest that took place at Manchester Airport saw activists become trapped deep underground. The protest was in opposition to Manchester Airport building a second runway and lasted six months.
Activists had occupied a camp situated on the proposed ground where the runway was to be built. It was there that the protestors moved in for the long haul, digging a tunnel network deep underground.
