This webinar is intended as a story of the field trip of the LASI 6 Conference (The physical geology of subvolcanic systems: laccoliths, sills and dykes, Malargüe, Mendoza Province, Argentina, 24-29 November 2019 - http://lasi6.org). The webinar is not a report on a scientific study of a specific topic, but is structured as a presentation of the geological peculiarities of the Neuquén Basin, such as the enormous yet little known Quaternary volcanic province, the superb exposures of the Miocene sub-volcanic bodies, and the oil field with unconventional reservoirs, fundamental support of the economy of Argentina.