Silver spray in the wintertime, deep green or reddish streaks in the other seasons. These are the colours of the Gennargentu massif, the Sardinian mountain par excellence. As you will be able to see from the map, or better still in person, this is a complex mountainous area including various offshoots, one of which is Supramonte, extending northwards almost as far as Nuoro, and to the south as far as the valley of Flumendosa, while from east to west they go from the Tyrrhenian sea to the Tirso river. This is where the main waterways originate and run down to the eastern coast of Sardinia.