They saw plants everywhere, even though the environment is still extremely cold but there are trees and different plants thriving in the area, but there is a lack of living beings, there aren't even small creatures in the area, making the beautiful crystal forest a bit gloomy and creepy.
The mammoth does not think so, for it, the existence of plants everywhere is a miracle, it wanted to immediately start eating, it's ancestor have developed a unique kind of diet to survive in this harsh continent, they have become omnivores.
But if they continue eating meat, their mind would become corrupted, it had been craving for some leafy delights and now that the thing that it was craving is now present in front of it, of course it was very tempted.