The cave was included on the Antiquities List of 1925,[6] but was not opened to the public until March 1933.[7] A museum was set up on site by the then-Curator of Natural History, Joseph Baldacchino. Within a year of his appointment as curator in 1935, Baldacchino published a booklet on Għar Dalam, highlighting the main excavations and investigations of the cave.[7] The museum was slowly upgraded, new specimens replacing the old, and a labelling system set in place.[7]