The terrain of the Iberian Peninsula is largely mountainous. The major mountain systems are:

The Pyrenees and their foothills, the Pre-Pyrenees, crossing the isthmus of the peninsula so completely as to allow no passage except by mountain road, trail, coastal road or tunnel. Aneto in the Maladeta massif, at 3,404 m, is the highest point

The Mulhacén, the highest peak in the Iberian Peninsula
The Cantabrian Mountains along the northern coast with the massive Picos de Europa. Torre de Cerredo, at 2,648 m, is the highest point
The Galicia/Trás-os-Montes Massif in the Northwest is made up of very old heavily eroded rocks. Pena Trevinca, at 2,127 m, is the highest point
The Sistema Ibérico, a complex system at the heart of the peninsula, in its central/eastern region. It contains a great number of ranges and divides the watershed of the Tagus, Douro and Ebro rivers. Moncayo, at 2,313 m, is the highest point
The Sistema Central, dividing the Iberian Plateau into a northern and a southern half and stretching into Portugal (where the highest point of Continental Portugal (1,993 m) is located in the Serra da Estrela). Pico Almanzor in the Sierra de Gredos is the highest point, at 2,592 m
The Montes de Toledo, which also stretches into Portugal from the La Mancha natural region at the eastern end. Its highest point, at 1,603 m, is La Villuerca in the Sierra de Villuercas, Extremadura
The Sierra Morena, which divides the watershed of the Guadiana and Guadalquivir rivers. At 1,332 m, Bañuela is the highest point
The Baetic System, which stretches between Cádiz and Gibraltar and northeast towards Alicante Province. It is divided into three subsystems:
Prebaetic System, which begins west of the Sierra Sur de Jaén, reaching the Mediterranean Sea shores in Alicante Province. La Sagra is the highest point at 2,382 m.
Subbaetic System, which is in a central position within the Baetic Systems, stretching from Cape Trafalgar in Cádiz Province across Andalusia to the Region of Murcia. The highest point, at 2,027 m (6,650 ft), is Peña de la Cruz in Sierra Arana.
Penibaetic System, located in the far southeastern area stretching between Gibraltar across the Mediterranean coastal Andalusian provinces. It includes the highest point in the peninsula, the 3,478 m high Mulhacén in the Sierra Nevada.
Given this paragraph about the terrain of the Iberian Peninsula, tell me the highest point in the peninsula and its altitude.
The highest point in the Iberian Peninsula is Mulhacen, located within the Penibaetic System. Its altitude is 3,478 m, or 11,411 ft