Madrid economic, cultural, industrial, educational, and technological centre on the European continent. Madrid lies on the southern Meseta Central, 60 km south of the Guadarrama mountain range and straddling the Jarama and Manzanares river sub-drainage basins, in the wider Tagus River catchment area. There is a considerable difference in altitude within city limits ranging from in the Manzanares riverbanks in the southeast of the municipality to above sea level in the highest part of the Fuencarral-El Pardo district. Over a quarter of the Madrid municipal area is covered by the largely forested protected area of El Pardo. Madrid has an inland
Allison Engine Testing Stands by servicemen of the 44th Depot Repair Squadron of the USAAF 81st Air Depot Group; two enclosed engine stands constructed by the Allied Works Council; two open stands of unknown construction; and a concrete pavement area which is the site of former associated buildings. The first Allison Testing Stands were constructed on the eastern side of Schneider Road and the Eagle Farm Aerodrome in November–December 1942 as a consequence of arrangements made for Australia to serve as a stronghold for United States (US) operations in the Pacific during World War II (WWII). The area, however, had previous links with aviation.