Container is a green ammo can at the top of a rock formation with some souvenirs inside!
The best way to get there is to start at the Upper Green Mountain trailhead and make your way over the top of Green Mountain and drop down on the east side. The ridgeline running to the east towards Bear Saddle should take you to a formation I call God's Thumb. Or you could take the long way and climb up to it from Bear Saddle :).
I found this spot a few weeks ago on my way to Green Mountain from General Hitchcock Campground. The climb from Bear Saddle to the top of Green Mountain was very challenging, but the view from this spot made it well worth the climb and I hope others will enjoy it as well!