Pete Lake fills a broad basin near the upper end of the Cooper River valley. The eastern shore of the lake offers good views of Big Summit Chief Mountain to the west and the surrounding ridges. The trail is essentially a continuation of the Cooper River Trail, as it follows the broad Cooper River valley upstream from Cooper Lake to its headwaters at Pete Lake.
As the trail nears the lake, around the 3-mile mark, it passes an old, massive rockslide. The slide covers the south side of the valley. The trail skirts the worst of the rubble, but provides good views of the pile of rock and displaced earth.
The cache is hidden along a side trail just before entering the wilderness area. Reception was very poor so I've provided both a hint and a spoiler picture. I don't know if either will help. Let me know if you come up with better coordinates.
Wilderness is land that is - rare, wild places where one can retreat from civilization, reconnect with the Earth, and find healing, meaning and significance. Be respectful of this area and of others who come here to take a step back in time.
A Northwest Forest Pass is required to park at the trailhead.