Vault (popularly known as the Yellow Peril) is a public sculpture located in Melbourne, Australia. The work of sculptor Ron Robertson-Swann, Vault is an abstract, minimalist sculpture built of large thick flat polygonal sheets of prefabricated steel, assembled in a way that suggests dynamic movement. It is painted yellow. Presently located outside the Australian Centre for Contemporary Art, it is a key work in Melbourne's public art collection, and of considerable historical importance to the city.