This is the most extensive of the UNESCO Dolomites systems, covering an area of 53,586 hectares in the Provinces of Belluno and Bolzano/Bozen. It strechtes from Val Pusteria/Pustertal to Val Badia/Gadertal, from the valleys of Sesto/Sexten and San Cassiano/St. Kassian to the Boite and Piave ones and it consists of four main areas: the Sesto/Sexten Dolomites, Comelico and Auronzo, the Fanes – Senes – Braies/Prags chains with the Tofane, the Cristallo and the Cadore Dolomites.

The Sesto/Sexten – Cadini Dolomites are in the far north-eastern part of the Dolomites, featuring spectacular peaks looming more than 2,000 meters above the huge rocky high plateaus. As well as the triple peaks of Tre Cime di Lavaredo/Drei Zinnen, undoubtedly one of the most well-known and iconic chains, the system is also home to the mounts Croda Rossa/Hohe Gaisl (3,146m), Punta Tre Scarperi/Dreischusterspitze (3,152m), Croda dei Toni/Zwölferkofel (3,094m) and Cadini di Misurina (Cadin di San Lucano 2,839m).

Val d’Ansiei separates the Sesto/Sexten – Cadini Dolomites from the Monte Cristallo chain, dominated by the peak of the same name that towers up to 3,221 meters.

The Val di Landro/Höhlensteintal separates the Sesto/Sexten – Cadini Dolomites from the Fanes – Senes – Braies/Prags chain and the Tofane peaks, an area occupying the north-western and central part of the Northern Dolomites system. Among the peaks in this area there are the Lagazuoi crest (2,762m), the Tofane peaks (Tofana di Rozes 3,225m, Tofana di Mezzo 3,244m and Tofana de Inze 3,238m) and the Conturines chain.

The Cadore Dolomites to the South-East are dominated by Mounts Sorapiss (3,205m), Marmarole (2,932m) and Antelao which, at 3,264m, is the second highest peak in the Dolomites after Marmolada.

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