Varilongo wolfram in the Second World War Curiosity · Santa Comba, Xallas, A Coruña Image of Santa Comba, not of the place itself. During the war the Varilongo mines came under German management because of the strategic interest of wolfram, essential for war steel; in 1943 the working conditions there were reported to the mining authority. Photo: Miguel Branco (CC BY-SA 4.0) What to see and do in Santa Comba