This trail originally started from the east end of the McCord Creek Bridge along the route described on the Original Elowah Falls Trail page. Today, it branches off from Gorge Trail #400, approximately .3 miles from the Yeon State Park trailhead.
Below, a view of the old pipes from Warrendale in 1902.
This trail and flume pipe were built circa 1890 by pioneer Myron Kelly to deliver pressurized water down from atop Twin Falls to his pulp mill on the Columbia (via the half-mile, 600 vertical foot pipe). The water pressure turned "pulp wheels" that ground up cottonwood trees to sell to Camas' paper mills. (Cook. Curious Gorge. 31-32)
The upper trail wasn't blasted out of the cliffs altogether. It's an improved natural feature. If you look across the other side of the canyon, you can see that the crack between lava flows continues on the other side. The track may have been passable to adventurous (read foolish) types before the trail was improved. I'm sure some blasting was done, but it wasn't nearly on the scale of Eagle Creek. Since the developed stonework lower down proves that at least that portion was built for tourism, I suspect the entire trail was a very early tourist trap.
Upper McCord Creek Falls may be more appropriately considered the upper tier of Elowah Falls because the two are so close together (and can actually be seen in tandem from one or two locations), but regardless of its questionable independence is a very scenic waterfall...
Height: 64 feet
Primary Form: Segmented Plunges
Scott Cook has some great photos and info on the old pipe and this trail.
"Here is a 1936 Oregonian article describing the trail, the Flume pipeline, and a bit about the petrified tree stump that once graced the McCord Creek bridge before being removed for the I-84 bridge widening: Mc Cord Creek petrified trees and pipe trail, May 1936 (http://curiousgorgeblog.files.wordpress.com/2010/04/mccord-creek-petrified-trees-and-pipe-trail-may-1936.pdf)"
http://www.oregonhikers.org/forum/viewtopic.php?f=8&t=20733