Following in the footsteps of Paul Cézanne and his famous artworks of the Bibémus Quarry, this week's heat will see our artists head to Wales' Dinorwic quarry. Once the second largest slate quarry in Wales (and the world) the site is now home to the National Slate Museum and a major rock-climbing venue for those looking to test their grip. But which of this week's painters will hold on to their chance for the Cézanne-inspired commission?

Starring:

Stephen Mangan, Frank Skinner, Joan Bakewell, Kate Bryan, Tai Shan Schierenberg, Kathleen Soriano

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