Campo Imperatore is a mountain grassland or alpine meadow formed by a high basin shaped plateau located in the Province of L'Aquila in the Abruzzo region of Italy in the Gran Sasso massif. It is the largest plateau of the Apennine ridge. Known as Italy's "Little Tibet", it is located in the Gran Sasso e Monti della Laga National Park. Campo Imperatore has a tectonic origin shaped by alluviums and glaciers. The plateau, which is 27 km in length and an average of 8 km in width, lies adjacent to the Apennines' highest peak Corno Grande, and Europe's southernmost glacier, the Calderone; also surrounding the plateau are Monte Prena, Monte Aquila, and the Camicia Mountains to the north and Monte Scindarella, Mesola and Monte Bolza to the south.