What is "prattigau"

The Prättigau Valley, in the canton of Graubünden (Grisons), Switzerland, is home to the world-famous ski resorts of Klosters and neighbouring Davos in the Landwasser Valley. At its heart is the river Landquart. The valley extends upwards from Landquart, a key transport terminal just north of Chur, the capital of Grisons. It is a popular tourist destination for winter and summer activities, including downhill and cross country skiing, tobogganing and hiking. Traditionally, towns in the Prättigau were reliant on the lumber industry, although the income from tourism has largely replaced that.