Among the most striking of the Dolomites is the Pala Group (Italian: Pale di San Martino, Dolomiti delle Pale, or Gruppo delle Pale). Rising majestically above Passo Rolle, the sharp pyramid of Cimon della Pala (or Cimone, 3184 m/10,446 ft) is known as the Matterhorn of the Dolomites (il Cervino delle Dolomiti). Visit the mountain resort of San Martino di Castrozza, in Trentino-Alto Adige/Südtirol (South Tyrol) region of Italy, Europe. 200 million years ago, Triassic coral reefs fossilized into Dolomite. Collision of tectonic plates lifted the Dolomites within the Southern Limestone Alps. UNESCO honored the Dolomites as a natural World Heritage Site in 2009.