The Serra da Gardunha is an elevation of mainland Portugal, with a length of 20 km, 10 km wide and 1227 meters in altitude. It is located in Beira Baixa. County of Fundão, District of Castelo Branco. The Serra da Gardunha is also known as Guardunha (Arabic word meaning "refuge").

This area is the capital of cherry production in Portugal, and in the parishes of Alcongosta and Souto da Casa. Other parishes with high production of cherry: Vila de Joanes, Aldeia Nova do Cabo, Alcaide, Alpedrinha, Castelo Novo, Fundão.

Several decades ago the production was the dominant brown, but in the years of 1930, a disease (attacked most soutos (sets of chestnut). Fires worsened the destruction. Nevertheless, the recent reflorestamentos have not been sufficient.

There are natural numerososo belvederes, where you can observe the Cova da Beira and the Serra da Estrela, Covilhã and Belmonte (North) in the plains area of Castelo Branco, Penamacor and Idanha-a-Nova (South and East).

The Serra da Gardunha is also a good place for the practice of free flight (paragliding).
Place of departure: the landmark geodesic Cortiçada (road Fundão - Alpedrinha, in the curve of Gardunha Portela). Altitude: 1226 m; Ascent: 500 m; Guidance take off: This is a place of flight in excellent thermal, anti cyclonic conditions and wind east.

In this mountain can see several species of animals and plants. For plants should highlight the éspecie endemic: Asphodelus bento-rainhae. It is an endemic plant species of the northern part of Sierra Gardunha, in the area between the Alcaide and Souto da casa.

This species is protected by the Association for Defence and Development of the Sierra Gardunha, with subsidies from the European Union for the project "Life / Nature."

The juice of the tuber of Asphodelus bento-rainhae is used to treat infections of their rarity pele.A amply justifies the protection that is targeted, despite being at risk of extinction due to surribas of the mountain, for the planting of fruit trees whose economic performance attracts the greed of small farmers (cherry).