Yes, saw 3 distinct landslides going off on the video. Wonder what drops/quest will be involved with them... upgrading relic and/or +1 perhaps?
Edit: Found the answer - QA session it seems on main forums
Q56: Will the extreme primal battles be part of the main story and/or be tied with the relic quest?
Edited, Nov 22nd 2013 6:56pm by SillyHawk
I believe they also drop level 90 weapons