Greina

Greina, also known as Pian di Greina, is a high-altitude plateau in the Swiss Alps located on the border between the cantons of Graubünden and Ticino. The plateau sits at roughly 2,400 meters above sea level and forms a major hydrological divide, with streams and rivers contributing to separate river systems on either side of the Alps.

Geographically, Greina is characterized by wide grasslands, glacially influenced terrain, and sparse tree cover. The landscape includes periglacial features and extensive alpine meadows that are shaped by long-standing pastoral use and seasonal snow cover. The area is part of the Lepontine Alps and is known for its stark, open panoramas and rugged, remote terrain.

Ecologically, Greina supports diverse subalpine and alpine habitats. Its meadows host a variety of specialized flora and provide grazing pastures for pastoral activities in the warmer months. The plateau is also home to typical alpine wildlife such as ibex, chamois, marmots, and a range of bird species, including raptors that hunt over open terrain.

Protection and management are provided by the Greina Nature Reserve, a jointly administered protected area established in the late 20th century by the cantons of Ticino and Graubünden with support from conservation organizations. The reserve aims to preserve the plateau’s fragile grasslands, hydrological features, and traditional pastoral practices, while allowing regulated human activity.

Access to Greina is primarily on foot and by following seasonal hiking routes; winter conditions render much of the plateau inaccessible. The area continues to be valued for conservation, research, and outdoor recreation.