Ha! Ha! We came up the Florence Lake FSR to clean out all of our unfound caches (which we didn't) and ended up dropping a few more to get you to come back to this fun area. You can get to the trailhead with a decent vehicle. The road has some rough spots, but take it easy and you will get there. Watch for the dirt bikes, quads, side-by-sides, 4 wheel drives and bears.
Near the posted location you will find a structure that will reveal the clues to help you find this cache. The cache can be found at:
N49° 21.ABC' W122° 19.DEF', where:
A = last digit of the year of the label on the box.
B = number of clasps on the top edge of the box =
C = number of solar panels =
D = number of padlocks on the box =
E = last number of the label # on the box =
F = third number of the label # on the box =
Checksum A+B+C+D+E=F=28