20-Apr-2009 -- After a failed attempt to find this Confluence, I went back and looked on Google Earth to find out why I had thought it was going to be so easy. It turned out that there is indeed a path that goes pretty much directly to the Confluence, we had just tried to get to it from the wrong side.
The second time I programmed in a bunch of waypoints into the GPS unit to make sure I wouldn't get lost. It was a pretty easy ride. From Biro (a small town) it was about 7 km on a dirt road to some village whose name I've forgotten, and then another 5 km further on a footpath. The closest point from the path to the Confluence was about 60 meters, so I just got off the moto and walked. There was even a tiny path going off into the field where the Confluence was located.