The Santa Susana Mountains are a mountain range located in Southern California, primarily within Los Angeles County and Ventura County. They are part of the larger Transverse Ranges and stretch approximately 30 miles. The mountains are known for their rugged terrain, diverse ecosystems, and scenic views, making them a popular destination for outdoor activities such as hiking and rock climbing. The range is home to several notable peaks, including Mount McCoy and Simi Peak. The Santa Susana Mountains also feature various wildlife habitats, supporting species like deer, coyotes, and numerous bird species. The area is rich in history, with remnants of Native American settlements and early Spanish exploration.