Having just learned that there were trails from my base of operations at Zion Ponderosa Ranch, I drove back through Zion park and checked in at the activities desk where I was able to get detailed, but strangely imprecise directions to Cable Mountain, which would have been a 15 mile roundtrip hike from the Weeping Rock trailhead accessible from the shuttles at the Springdale entrance to the park. But from the trailhead at the ranch, it would only be a 5 mile roundtrip, and I was assured that it would be scenic and historic (and pretty much level). And I had another cheeseburger ready to go.
Since it was getting a bit late, and I didn't want to get caught in the dark, I set off immediately in my car on the dirt roads, of which there were a great many, leading in all directions, and not in the best shape due to recent flash flooding. The map with which I had been provided was a bit lacking in key detail, but I did manage to find a place to park near what appeared to be the trail, and set off at a spritely pace, which got even more spritely when I came across signs indicating that this was actually going to be 7 miles roundtrip, rather than 5. And not nearly as level as I had been led to believe.
The last mile of this hike is mostly downhill, which seems a bit unintuitive, but there is no mistaking the destination, as this is the site of a steam powered tram that was used to bring trees from the rim down to the canyon floor for construction. The trip apparently took 2 minutes, as opposed to a 2-day trip with horse-drawn wagons. Obviously, it has not been in use for a good long time (70 years).
On the way back to my car, I noticed the fork in the trail leading to Deertrap Mountain, which is another as yet uncheeseburgered summit, but it was too late, and I was too tired for another couple miles. And I was out of cheeseburgers. So Deertrap Mountain remains for another trip.