Au-del\u00e0 de Tarascon-sur-Ari\u00e8ge, s’\u00e9tendent les plus hauts massifs de l’Ari\u00e8ge : le Vicdessos, l’Aston, le Capcir. La vall\u00e9e de Vicdessos\/Auzat s\u00e9pare 3 sous-massifs montagneux aux caract\u00e9ristiques vari\u00e9es : le massif des Trois-Seigneurs au Nord (Pic des Trois-Seigneurs, 2 199 m), ensemble pr\u00e9montagnard compos\u00e9 de schistes et de flysch form\u00e9 au Cr\u00e9tac\u00e9, le massif de Bassies (Pic pr\u00e8s de Puntussan, 2 698 m, Pic Rouge de Bassi\u00e8s, 2 676 m) compos\u00e9 de roches granitiques datant du Pr\u00e9cambrien et du Hercynien, et le massif du Pic de Montcalm (Pique d’Estats, 3 144 m, situ\u00e9 sur le c\u00f4t\u00e9 espagnol), formation schisteuse datant du Pal\u00e9ozo\u00efque. Ces massifs sont caract\u00e9ris\u00e9s par une alternance de zones de pente faibles (ombilic, moraine, \u00e9boulis, colluvions) et de zones d’\u00e9rosion aux pentes plut\u00f4t fortes (affleurements rocheux, c\u00f4nes d’\u00e9boulis)8.<\/p>\n
Les Massif de l’Aston et du Capcir repr\u00e9sentent le m\u00eame type de formation schisteuse que le massif du Montcalm. Les plus hauts sommets sont la plupart situ\u00e9s sur la zone frontali\u00e8re entre l’Ari\u00e8ge et l’Andorre (Pic du Port, 2 903 m, Pic de Serrera, 2 912 m, Pic de la Cabaneta, 2 847 m, Pic Carlit, 2 921 m). Les 2 massifs sont s\u00e9par\u00e9s par la vall\u00e9e d’Ax-les-Thermes qui permet d’acc\u00e9der \u00e0 Andorre par le port d’Envalira (2 409 m) et \u00e0 Font-Romeu (Pyr\u00e9n\u00e9es-Orientales) par le col de Puymorens (1 920 m). De nombreux lacs naturels ou artificiels occupent les vall\u00e9es encaiss\u00e9es. La r\u00e9gion a \u00e9t\u00e9 motrice quelle que soit l’\u00e9poque de par ses activit\u00e9s de forge (Orlu), hydro-\u00e9lectriques (barrage de Laparan), de thermes (Ax-les-Thermes), d’activit\u00e9s touristiques hivernales (ski de fond au Plateau de Beille, ski de piste \u00e0 Ax 3 Domaines, Port\u00e9-Puymorens, Ascou-Pailh\u00e8res, Mijan\u00e8s, dans les stations andorranes), ou d’activit\u00e9s touristiques estivales (escalade, parapente, randonn\u00e9es, ski nautique).<\/p>\n","url":"https:\/\/blog.elkami.fr\/category\/randonnees\/pyrenees\/haute-ariege\/","hasPart":[{"@type":"BlogPosting","@id":"https:\/\/blog.elkami.fr\/etang-du-sisca\/","headline":"\u00c9tang du 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