Martinez resets one of his 11 cameras in Angeles National Forest.
(Brian van der Brug / Los Angeles Times)
Martinez checks a camera.
(Brian van der Brug / Los Angeles Times)
Martinez picks up a deer skull at a spot where one of his cameras captured a mountain lion feeding on the carcass.
(Brian van der Brug / Los Angeles Times)Advertisement
One of Martinez’s cameras in a canyon in the hills.
(Brian van der Brug / Los Angeles Times)
Martinez views images on a memory card from one of his cameras on a beat-up laptop.
(Brian van der Brug / Los Angeles Times)
Martinez hikes into the Angeles National Forest to check his cameras.
(Brian van der Brug / Los Angeles Times)