I climbed the Kelley Trail two weeks ago, for the first time, for red-lining purposes, as the first leg of a loop to Square Ledge that included also part of the Oliverian Brook, Square Ledge Branch, Square Ledge and Old Mast Trails. The Kelley Trail climbs from near Ferncroft to Paugus Pass, where it joins the south end of the Oliverian Brook Tr.
The article says he was found 2 miles from the trailhead and the Trail is only 2.3 miles long, so I gather he was in the steep upper section, which actually follows Kelley Brook. The Brook is small but its ravine disproportionately steep, as it was the outlet for enormous, glacial Lake Albany for a while about 10,000 years ago, until enough glacial ice melted for the Swift River to form. There was no ice two weeks ago, and for the last half-mile I was glad of that. Here is a photo I took a little below that stretch:
It is good to hear that he declined a trip to the hospital. I hope we hear more about what happened. (The Trail was well marked with the blue blazes of WODC.)