ETA is the acronym of the terrorist group "Euskadi Ta Askatasuna", in Basque : "Basque Country and Freedom".
At the end of the movie, the real Maixabel Lasa could be seen behind María Jauregui (portrayed by María Cerezuela).
Luis tosar ( ibon ) had the opportunity to meet and to talk with the real ibon etxezarreta for a better performance of his character.