Deer Escape From Cave

Do you love the forest and very often go for a walk. Also, you do research of different kinds of trees and their life in different seasons. One day in early autumn, you are walking the forest. Already beginning to darken, and you decide to return home. You walked down the path and heard the roar of an animal. You went to the sound and found a deer, which are locked in a cave. You must free the poor animal.