lup
If the weather was bad,could be a case fo pressonitis.
Airspeed back to nothing, hugging the ground,trying to get over that hill.
lost visual reference,low and slow,intruments no use, tail rotor or main rotor hit the hard stuff, game over!
Pure speculation on my part, but that's all we can come up with from some photos.
Could be the case, amongst others, previously mentioned.
What looks like a tail rotor on second pick, look down hill in line with the open door.