Francis Alÿs 

Implosion/Explosion, 2009

Diptych 
Each: 7 1/2 x 5 5/8 inches (19.1 x 14.3 cm) 
Overall: 7 1/2 x 13 1/4 inches (19.1 x 33.6 cm)

Titled recto; dated and inscribed verso