The Forest
You walk into the forest. As you make progress, you notice that the trees are becoming farther and farther apart, and that the temperature is beginning to drop drastically. Suddenly, you see the entrance to a cave in front of you. The mouth of the cave is encrusted with ice, and you can see that the interior of the cave is as well.

This seems very odd to you, for the climate does not see right to find an ice cave such as this. You can't help but be intrigued. You also notice that there is a little path leading around the back of the cave and off into the forest.
Follow the path
Go into the cave