Teide (Llano de Maja), since 18-7-1936, 68 missing. According to witnesses and research work the disappeared are supposed to be in several mass-graves or caves around the Llano de Maja within the Teide National Park. Teide National Park, Canary Islands.
Monte Ezcaba (Fuerte de San Cristóbal). On 22-5-1938, during the Spanish Civil War, a massive escape took place from the prison at Fort San Cristóbal. It was one of the largest and most tragic prison breaks in Europe. 795 mostly political prisoners broke free, 206 were murdered, and only 3 succeeded by crossing the French border. Berrioplano, Navarra.