“…Work on the geomorphology of the Pyrenees has been less abundant than in the case of hard-rock geology, lithostratigraphy, tectonics and solid-earth geophysics, but it began almost at the same time as the early geological work. The landscape of the Pyrenees has been attracting geomorphologists since the late 19th century and has involved scholars from Germany (Penck, 1886(Penck, , 1894Ashauer, 1934;Panzer, 1926Panzer, , 1933, the Netherlands (Pannekoek, 1935;Boissevain, 1934;de Sitter, 1952de Sitter, , 1954de Sitter, , 1961Kleinsmiede, 1960;Zandvliet, 1960;Hartevelt, 1970), Switzerland (Nussbaum, 1930(Nussbaum, , 1931(Nussbaum, , 1943, Spain (García Sainz, 1940;Solé Sabaris, 1951) and France (de Martonne, 1910;Blanchard, 1914;Sorre, 1913;Birot, 1937;Goron, 1941a, b;Sermet, 1950;Taillefer, 1951;Viers, 1960Viers, , 1961Barrère, 1963). For more detailed reference lists covering work before 1990, see Birot (1937) and Calvet (1996).…”