The flaring spike you caught on one of the photograph has officially been reported and studied by scientists lately, a rather unusual phenomena that had been reported but not studied enough yet... You shots are pretty darn cool and what a delight to be camping in the area to witness such display of grandeur! Glad you had such a good time. If you can, the following nights should be pretty amazing for even brighter and much more colourful auroras, either borealis or australis!
May you be blessed with their reds, blues, and violets, it blows one's mind!
Thanks again for this magnificent sharing. Namaste :)