Verified Answer :

In chapter 15 from the “Frightful mountain” is said that September cames with fall. So, naturally, the animals start to
hybernate.  It’s means that Sam will face with that
problems as exposure.
Sam decided that if he wanted to
keep warm, he would have to put clay to cover his tree. He also decided that he
needed a fireplace. But, as he tried to make a fireplace for days, he realized
that it would not work.

Mole almost gets shot