Rosenita Saddle Trailhead Location: Rosenita Saddle Google Map Link Rosenita Saddle Trailhead vicinity map. Parking: Parking may require a National Forest Adventure Pass. View of parking at Rosenita Saddle. There is another small parking area across the road. Hikes: Rosenita Saddle to Mt. Hillyer Lollipop: 4.2 miles, 845′ of gain and loss.