During this geological period, the area that later became the Dolomites was covered by an arid desert and was roughly at the level of the equator. Then, the ground in this geographical area slowly dropped and a shallow tropical sea full of life, little by little, submerged the entire region.

Yes, the Dolomites were originally a massive coral reef system at the bottom of a tropical sea approximately 250 million years ago during the Triassic period. The region was part of the Tethys Ocean, where organisms like algae, sponges, and corals deposited calcium carbonate, creating thick layers of sedimentary rock. About 65 million years ago, the collision of the African and European tectonic plates began pushing these seabed layers upward, forming the dramatic peaks we see today. This is why hikers often find marine fossils, such as ammonites and shells, at altitudes exceeding 3,000 meters. The unique "dolomite" rock itself is a result of a chemical transformation where magnesium from the seawater replaced some of the calcium in the limestone. This geological history gives the Dolomites their distinct pale color and vertical walls, earning them a place as a UNESCO World Heritage site for both their aesthetic beauty and their incredible record of ancient marine life.