14-May-2015 -- This point doesn’t quite count as a ‘Forgotten Confluence Point’, as it had been visited once more - in 2010 - following its initial visit in March 2000. However, it’s a bit surprising that it hasn’t been visited more often, as it’s the closest point to the Boise metropolitan area. There was, however, a small rock cairn at the confluence point; this appeared to have been added sometime since the 2010 visit.
I reached this point in about the same way as the previous (reported) visitors: By taking a farm road south from Idaho Highway 67 (Grand View Road). In my case, I took Nicholson Ranch Road, which ran beside a large fenced-off farmed area. This road soon turned into a doubletrack that became increasingly indistinct, and disappeared while I was still about a mile and a half west of the point.
At this point, I could have parked and hiked the rest of the way. However, because I had a 4WD vehicle, and because the terrain was flat, dry, and with nothing growing except short grass, I continued driving off-road towards the point. I was able to get within just 0.1 miles from the point, before parking.
The confluence point lies in sandy, arid terrain, with little growing except dry grass. Small volcanic rocks are scattered about, revealing that - like so much of southern Idaho - this area was volcanic in the (geologically) recent past.
Here is a remote-controlled aerial video of this confluence point.