Team Dasein reached the 1000-cache mark. (Okay, that was nine months ago. I'm a little behind on my to-do list.) This cache is placed to honor their achievement and to give hiking enthusiasts another reason to lace up their boots.
The Larch Mountain Trail from Multnomah Falls to Larch Mountain is my favorite hike in the gorge. For half its length, it follows Multnomah Creek, a panoply of cascades and pools. On a warm day you can kick off your boots and frolic in the water. You'll have lots of company near the bottom of the trail or you can find solitude up higher. If you go all the way to the top, you'll be rewarded by awesome views at Sherrard Point, where you can see five volcanos on a clear day.
I saw copious wildflowers. If I were Chubby Forest Monkey, I could tell you what these are.
The cache is located halfway up the trail at 2200 feet elevation. You can approach from above or below; there's an elevation change of 2000 feet either way. Most GPSRs will be unable to get a satellite lock here so I made it easy: the cache is hidden beneath the highest footbridge across the creek. If you approach from below, that's the third bridge after the junction with the Wahkeena trail. If you come to a huge rockslide area, you've gone too far. Contrariwise, if you approach from above, it's the first bridge you encounter, just beyond the rockslide.
The first footbridge is made of steel. The cache is not there.
The second footbridge is wood with a steel cable handrail. The cache is not there.
The third footbridge is wood with a wooden handrail. The cache is a 30-caliber ammo can under the west end of this bridge. Here's a photo:
I put it in this exposed position so you wouldn't have to leave the trail and whack through bushes. Please re-hide it completely or it won't last long.
Here's a good topo map.