Complex sentence: Pinos, the highest peak in the area at 8,831 ft., is a popular Southern California location for cross country skiing, mountain biking, hiking, backcountry snowboarding, astronomy and other recreation.
Split into simpler sentences: Pinos, the highest peak in the area at 8,831 ft., is a popular So. Calif. location for cross country skiing, mountain biking, hiking, backcountry snowboarding, astronomy and other recreation.