Off-highway vehicles roam the dunes of the Sand Lake Recreation Area under jurisdiction of the Hebo Ranger District USFS. We've buried this geocache among them. You will need a properly equipped vehicle to get to it. Bring a shovel. February 24, 2001. page 
Sand Lake Geocache Installed in 2001 45.29668, -123.95034 Sand Lake Geocache
Coastal dunes form when prevailing winds carry grains of sand inland and drop them the leeward side of any rise. Forests slow the wind, but then sand kills the forest, so this becomes a giant game of rock-scissors-paper between the sand, air and trees.
My young son Chris approaches the burial marker stump where the GPS was left integrating for more accuracy.
The cache is buried under about a foot of sand. It is located two feet north of a lone tree which should be obvious once you are within a few hundred feet.
The acquired coordinates of this cache are actually that of a nearby stump. Don't dig there.
We bought one of those five gallon drums from the paint department at Fred Meyers so that we'd have plenty of room in the cache. On the dunes we parked our jeep so as to block the view from the most obvious directions. Then, as further subterfuge, we only dug a foot or so at a time while we lunched on snack food and soda.
Nobody paid us much mind. Then in one quick motion we dropped the bucket in the hole and kicked it over with sand. Done. I hope you can be just as sly retrieving it.
As is the custom, we left a notebook and some trinkets for trading with future stash hunters.
Epilog: A year later I got the report that the cache was gone. I had a second bucket, filled it and installed it anew. Two years later, gone again. I'm out of buckets.