Probably used in the past to house the Signal Flag set at the lightstation. Appears to have been stored in the old stables for a number of years.The rectangular wooden cabinet has the distinctive features of a flag locker, comprising numerous open compartments of the same size each for storing a signal flag of a unique design. It has three internal shelves and a bench top, and is painted grey, a colour that is used for many of the wooden utilitarian furnishings in the six lightstations Parks Victoria manages. The cabinet, without its flag contents, was found in storage in the old stone stable building and is highly likely to be original to the lightstation. A wooden flag locker is
held at Wilsons Promontory Lightstation. A wooden locker comprising two sections of 16 pigeon holes and four cupboard doors is held at Cape Otway The two flag lockers at Cape Nelson Lightstation are included in Victorian Heritage Register for contributing to the significance of the lightstation. The Nelson, Otway and Promontory lockers have associated sets of flags which are original to the lightstations.
The Gabo Island cabinet has second level contributory significance for its provenance to the lightstation.
Timber cabinet painted grey, partitioned with numerous open compartments of the same size .