Onslow Back Beach is located in Avila Beach, Australia. The beach is approximately 1.5 km long and is characterized by its stunning white sand and crystal clear waters. Visitors can enjoy activities such as swimming, snorkeling, fishing, and sunbathing. The beach offers many amenities, including bathroom access, showers, picnic areas, and free Wi-Fi. There are no lifeguards on duty, so swimmers should exercise caution. Dogs are allowed on the beach, but they must be kept on a leash at all times.