Mira, Celaine, and Maria began to slowly make their way towards the cave, but the atmosphere changed when they entered.
What used to be so cold that they felt like they were about to become an ice cube started to become a bit warmer. It wasn't by much, but with how sensitive they are they were able to feel the slight temperature change.
Needless to say, the interior was still covered in ice on all sides, but due to Mira's ice affinity, she could feel that the ice in this cave was slightly less dense than the ice outside of the cave.
The three of them walked a bit further and started to see bones, both encased in the ice and above the ice. The more they walked, the more bones they started to find until the ice became less ice and more bones along with the ground being completely covered in them as well.