In 2014 the so-called Islamic State blew up the Nabi Yunus mosque in Mosul, and tunneled under the remains in search of archaeological artefacts in the ancient Assyrian palace beneath. When IS was expelled from Mosul the tunnels were sealed off, but BBC Arabic cameraman Namak Khoshnaw, and journalist and former archaeologist Eli Melki, got permission to film inside the tunnels earlier this year. What they found was amazing, but not everything went entirely to plan.

Image: Assyrian carving of three women
Copyright: BBC