"Images of the Retiro slave market in Buenos Aires had never been seen previously and the possibility of excavating the site has long gone. The discovery of etchings of the underground cellars in 2010 of the Bieckert Brewery, which occupied the site years later, has made it possible to see the nature of the market and understand the functioning of the construction that preceded the brewery. This market was unique in the city in that it functioned almost underground. The issue of the presence of the African population in Buenos Aires has had a great impact on archaeology. All information regarding the black population's material culture and architectural places, whether made by them or for them, is important; such is the case here of accessing a system of vaulted subterranean constructions quite different from the city's other architecture."
Schavelzon, Daniel. βOn Slaves and Beer: The First Images of the South Sea Company Slave Market in Buenos Aires.β African and Black Diaspora: An International Journal Vol 7, No 2 (July 3, 2014): 119β28.