FL,
It is right and fitting you post those photographs. Reminds us of the controlled risks we accept when we go flying. The goal is to prevent these occurrences as much as we can.
A quick look at the photographs left some interesting observations....having seen lots of these things in the flesh....little things sometimes stand out.
The first thing that caught my eye....was the skids are reasonably intact....crushed a bit...but not horribly....and the roof forward of the mast is pretty well tore up. Gives some thought as to how the aircraft struck the ground and what could have caused that.
The second thing...was the high collective position. I have seen some collectives bent upwards from the amount of force applied by pilots during crashes....sometimes to the point you could tell who was flying at the time of impact. One collective being much higher than the other.
I am not trying to suggest any causes.....just observing what is there.
Condolences to the families that have lost loved ones....hope the injured have a speedy and complete recovery.