Eventually, I did manage to speak to eyewitnesses who described the site as a four way intersection near Gawuna. They said it was "near the village of Fela" or at the "Fela Turnabout." Problem is this is an informal name unavailable on any maps. But at least with the description, we could rule out many areas and narrow down the search even more.
In this corner of rural Ethiopia, there aren't that many four way intersections. So with a bit of studying of the footage and of satellite imagery...voila, found a match!
Barely a five minute drive from the Gawuna Hospital, this location on a road that cuts through rural Amhara country became the focus of our efforts.