Ajalvir

Ajalvir () is a town and municipality in the Autonomous Community of Madrid in central Spain, located north-east of Madrid and from Alcalá de Henares. It is located in the comarca of Alcalá.
The name Ajalvir is believed to have derived from the Arabic "al-jalaoui", meaning isolated or separated.
Geography.
Ajalvir is bordered to the north with Cobeña, to the east with Daganzo de Arriba, to the west with Paracuellos de Jarama and to the south with Torrejón de Ardoz. The town is crossed right by its centre by a creek, possibly a tributary of the "de la Huelga" stream. The area is slightly hilly, the highest peak is called "Cabeza Gorda" (fat head) of 767 meters, close to the "cerro del tordo" (hill of the thrush).