This sculpture is from a series of works Cragg refers to as the 'Early Forms'. These mark a shift away from the artist's use of found objects towards the use of materials, such as plaster or bronze, to make malleable, hollow sculptures, like this. Cragg has spoken of the 'integrity' of the 'Early Forms' sculptures: in this work, the hollow interior can be seen. Kolbenneblok is a unique cast. It is the first sculpture by Cragg to be sited permanently outdoors in Scotland.