There's a #missing hiker near #Monrovia California, who was apparently researching old #hiking trails. I think he's in one of these canyons: "Excurions up Monrovia Canyon may be made to (3 mi.) Sawpit Canyon, (6 mi). Deer Park, (14 mi.) Fish Canyon and (17 mi.) Los Lomas" -- now, to find those maps. He was hiking off trail... probably on an old trace. Not a great thing in the Angeles National Forest, which is extremely rough/rugged/dangerous down there.