 New local exhibition opportunities also opened up with the Birmingham Artists Committee (co-founded by Mellor) explicitly promoting challenging art forms at its annual "Invitation Exhibition".The late 1940s also saw a continuation of the group's disruptive surrealist activities across the city, with Morris's unexplained abandonment of a giant elephant skull on a Broad Street provoking a perplexed response from the police and press alike, and the city council strongly resisting Maddox's repeated attempts to stage a series of violent scenes involving nuns in city centre shop windows.The focus of surrealist activity in the period was Maddox's house overlooking Calthorpe Park in Balsall Heath.