ill delete this if people think its inappropriate...but I learned to ride a MTB here and im having a hard time not thinking about this
From the helicopter shots, it looks like he fell from the spot on the right, theres a short bit of trail that goes close to the edge of the cliff and downhill. Further down the trail, theres one more exposed section that the trail gets washed out and funky. it has tripped me up a few times, I remember walking it a lot when i first started.
these two sections arent even the worst of it. Further north the trail follows the cliff edge for a while on technical rock. The riding was fun there, but i only rode it once, It was too close to the edge for comfort. A fall there would be more than 20 feet though.