Into the Wild Crossword

A variation of mountains
To surround and have, or to hold within
To warn someone firmly
To be noticed
Belonging to a different period
Making moves that can't be removed
Without any reduction
A place with temporary accommodations
Suddenly or unexpected
To eat or to swallow whole
The name Christopher referref to himself as
The place where Christopher's body was found in
How Christopher died
The last person to see Christopher alive
The author of the book