Moncalvo, Mountain summit in Sierra Segundera, Spain

Moncalvo is a 2,044-metre summit in the Sierra Segundera, part of the Montes de León in the Galaico-Leonés massif. It lies in Porto municipality, Zamora province, Castile and León, about 6 km south of Pena Trevinca, near Lacillo and Herbosas lakes. A Spanish national geodetic vertex stands on the summit.

The summit's history is tied to the Spanish National Geodetic Network, which placed a geodetic vertex on the peak to anchor surveys of the Sierra Segundera. The 2,044 m summit lies in Porto municipality, Zamora province, Castile and León, about 6 km south of Pena Trevinca.

The peak lies in the municipality of Porto, in Zamora province, within Castile and León. Its slopes are grazing land, and the route to the top passes the shepherds' mallada de pastores de San Justo, a fenced pen where flocks are gathered, about 21 km along the access track.

Reaching the summit requires a suitable vehicle to navigate the N-525 road from Porto and then rough dirt tracks toward the Segundera dam. The terrain is challenging and conditions can change quickly, especially during wet weather.

At 2,044 m, the summit carries a geodetic vertex of Spain's National Geodetic Network, a concrete marker used for surveying and mapping. It stands on the highest part of the Sierra Segundera, about 6 km south of Pena Trevinca, above grazing land.