Input (grade 13): While Palmdale is still a part of Los Angeles County, the urbanized centers of Palmdale and Los Angeles are separated by the San Gabriel mountain range, which is about 40 miles (60 km) wide.
Output (grade 10): Even though Palmdale is in Los Angeles County, it is not connected to the larger Los Angeles population area. It is separated from it by a mountain range called the San Gabriel Mountains that are over 40 miles wide and almost 2 miles high overall.