Corsica and killings culminated in the assassination of Prefect Claude Érignac in 1998. In 2013, Corsica hosted the first three stages of the 100th Tour de France, which passed through the island for the first time in the event's 110-year history. Corsica was formed about 250 million years ago with the uplift of a granite backbone on the western side. About 50 million years ago sedimentary rock was pressed against this granite, forming the schists of the eastern side. It is the most mountainous island in the Mediterranean, a "mountain in the sea". It is also the fourth largest island in
Italian occupation of Corsica Rome, was a strong supporter of the union of Corsica with Italy and defended irredentist ideals. Indeed, Cristofini actively collaborated with the Italian forces in Corsica during the first months of 1943 and (as head of the Ajaccio troops) helped the Italian Army to repress the Resistance in Corsica before the Italian Armistice in September 1943. He closely worked with the famous Corsican writer Petru Giovacchini, who was named as the potential "Governor of Corsica" had the Kingdom of Italy annexed the island. In the first months of 1943 these irredentists, under the leadership of Petru Giovacchini and Bertino Poli,