Mount Rubidioux is a prominent hill located in Riverside, California. It stands at an elevation of 1,330 feet and is part of the Santa Ana Mountains. The mountain is known for its scenic views of the surrounding area and is a popular destination for hikers and outdoor enthusiasts. The mountain features several trails that cater to different skill levels, making it accessible for families and individuals. At the summit, visitors can find a large cross, which was erected in 1903, and a historic stone monument dedicated to Father Junípero Serra, a significant figure in California's history.