Kaffe Matthews was one of the artists of the group exhibition Undertones, 29.06.14—24.08.14.

At Marres works are presented of Haroon Mirza, Ryan Gander, Sarah van Sonsbeeck, Lyndsey Housden, Chaim van Luit, Joseph Beuys, Anri Sala, Nishiko and Paul Devens.

Outside Marres, Kaffe Matthews composes an audiovisual installation with sharks for the limestone cave in Sint Pietersberg.