Expressionist oil on canvas, 20th century

I have a lot of paintings at home and at my humble level, this one seems to me to be of good technique. It is very bright and represents a landscape of the Pyrenees. Oil on canvas from the 20th century school. There is no apparent signature but I attribute it to a painter called Déro (that said I have not dismantled the frame). And for connoisseurs like you it is expressionism 😊. Its measurements: 65 X 34.