I was 18 years old camping with a couple of my buddies. It was snowy, and biting cold winds battered our flimsy tents. We all sat outside on log benches surrounding a campfire. The fire snapped and popped as the sun dipped below the black trees. When the light was gone, we all fell silent, and stared at the fire.
For about 30 minutes we just sat in silence, until the friend next to me sat up and declared that he was off to bed. After that we decided that there would be no more talk or stories that night and slowly receded into our tents.
We were all awakened by a loud and piercing shriek. I stepped outside the tent to investigate, and was shortly joined by the others. The younger friends began discussing what it was that made the sound and were quickly hushed by the others.