Bring a flashlight for this one. I wouldn't suggest trying this with just a glowing phone screen. You'll want a serious flashlight.
Yes, it's in there. Way in the back. Did I mention you need a good flashlight?
Note: This cache is easily reached from the closest pullout on Hwy 49. You can reach it from the Western States Trail, but it's a difficult off-trail hike through an overgrown wash to get there. Access from Hwy 49 is way easier.
Have fun!