Victoria Cook, Hacker and Dodge, Barney Harwood, Chris Johnson, Lauren Layfield and Johny Pitts joins Ed on his European adventure. In this episode a underground mine is explored in Poland, were everything is made of salt.

Victoria Cook, Hacker and Dodge, Chris Johnson, Johny Pitts, Ben Shires and Naomi Wilkinson join Ed on his European adventure. In this episode there's a look at prehistoric cave art in France.