The document discusses shadow play and references sources related to shadows and darkness in art and media. It mentions Sean Cubitt's talk at the Lighting the Cave Symposium where he discussed shadow play. It also includes quotes from The Shadow radio program and links to recordings and merchandise of the program. An artwork by John Constable depicting trees is referenced. Finally, it links to an article about the Kelly Gang, known for their bushranger activities in Australia in the late 19th century.