Nature reigns supreme throughout the region, offering a magnificent spectacle everywhere, from the snowy peaks to the woods and pine forests. In this central valley stretch it takes on a particularly soft, gentle appearance, with the colours of the vineyards and chestnut trees painting a canvas of warm shades that are a delight for the eyes and balm for the soul. The mountains that encircle this area present a relatively modest altitude, such as Monte Zerbion , or the TantanĂ© , Monte Barbeston or Mont Avic , and are ideal for all those visitors who enjoy walking in splendid natural surroundings. Chestnut woods are the distinctive feature of the last stretch of the central valley, the one that runs from Montjovet to Pont-Saint-Martin and in particular to Lillianes, which is in fact known as the â€śvillage of chestnutsâ€ť, since more of them are grown here than anywhere else in Aosta Valley. Several nature areas in the central valley are considered to be of particular importance, and are specifically protected and safeguarded: first and foremost the Mont Avic Regional Park , spread out across 5,700 hectares and comprising forests of Swiss mountain pine, Scots pine, larch and beech, alpine grassland and a myriad of lakes and rivers; but also the Mont Mars Reserve , with its rich range of lakes and peat bogs; the â€śAbbĂ© P.L. Vescozâ€ť arboretum in Verrayes, the first reforestation experiment to be carried out in Aosta Valley; the â€ś Borna di Laou " (the wolf's den) arboretum in VerrĂ¨s, and the Lake Lozon Reserve, particularly interesting for the variety of environments .