His work as a filmmaker has been closely linked to his activities as a political campaigner on the environmental and political issues raised by the 2002 Prestige oil spill , a marine environmental disaster on a scale exceeding the Exxon Valdez incident . His most well-known film is '' Awaking of the Nightmare '' sic ( '' 1-12-2002 . A manifestación : O espertar do sono '' ) , about the great Galician nationalist and environmentalist protest rally on 1 December 2002
Prestige oil spill
Prestige oil spill
Mariano Grueiro