I walked the ridge to the summit of "Tinklet" with my son. Tinklet is the rocky peak that overlooks Cottonwood Lake. To get there, find the Mirror Lake Trail trailhead at the end of 5 miles of FS road, NW from I-90 exit 62. After a mile, you intersect the PCT and head uphill another 0.7 miles to a ridge at the intersection with the Cold Creek Trail. From here, go NE off-trail along the ridge. Soon it opens up with nice views of nearby Silver and Tinkham Peaks. Continue up until you get to the steep, bare rocks. At this point, you can go around to the south and stay below the ridge. There are several places where you can go up between the sheer rocks to get to the rocky peak. However, beware that this is not the summit. It's beyond these rocks on another wooded peak, several hundred meters further east. You actually can stay directly on the ridge, with some modest rock-climbing where you first hit the tall rock. Once on the flat, bare first peak (which is a nice spot for lunch), there is a sheer 30 ft cliff, but if you look around to the left (north), there is an easy way through. Further
east there is another sheer cliff, but again, there is a path around to the north. At the true peak there are some great views NW toward Granite Mtn, and NE up the Gold Creek valley.

Rather than go back along the ridge, we bushwhacked straight down (south) the steep, rocky slope toward the lake. We skirted around the west end of the lake, through the woods to regain the trail at 4100 ft.

1300 ft gain, 4.4 miles, 5:20 hours.