Many activities are available from trekking to free-climbing and canoeing allowing you to discover the rich natural environment. The track Selvaggio Blu (Wild Blue) is a spectacular 6-day coastal walk, also known as the hardest Italian trekking route.HOTEL Ulassai A great way to discover the area is on board of the Trenino Verde (Small Green Train). It runs for 159 km and it will show you the wilderness and the greenery of the surroundings through most evocative landscapes.