The Hyrax Hill site was proclaimed a national monument in 1945 and opened to the public in 1965. This was as a result of startling discoveries of relics by Mrs. Selfe and subsequent archaeological excavations that were carried out by Dr. Mary Leakey in 1938 that revealed substantial findings in different areas of the site and levels of occupations. The late Mrs. Selfe was the owner of the property. The renovation of archaeology exhibit was made possible through the kind sponsorship of Kenya Museum Society and consultation of British Institute in Eastern Africa in collaboration with the National Museums of Kenya. The hill comprises particular importance due to the fact that it encompasses several phases of occupation; it also has a long history of archaeological investigation, which began in 1937 with Mary Leakey.