Any chance you'd post it as a separate article?
Where you see "Ortega Hwy" written on the map, there is a step overlook that looks north to the lake where the hang gliders launch. This is probably the area from what the 911 described and from some knowledge of that area. The area is very rural with some homes to the west where you see the streets off Hwy 74. There is a lot of motorcycle traffic from the speed bikers who are drawn to the Ortega's many twisting mountain curves.
The area is inside the Cleveland National Forest and is very thick chapparal and scrub oak habitat. The area is popular with hikers, mountain bikers and hunters. Many of these N.F. areas are used a dumping grounds for bodies cuz it's quick, out of sight at night. With steep canyons you can roll the stuff you want to get rid of down into the thich brush so it stays out sight for awhile.