You were camping (with or without friends/family) in Canada. Dusk had fallen over the forest where you were staying and big cloud of mist was hovering over the lake next to your camping spot. It was nice and quiet. Crickets were chirping and it wasn't exactly cold or warm. Just the soothing night temperature. The sky was slowly darkening, though there was enough light to see quite clearly.

Suddenly, you heard a long eerie wolf's howl-like call. It echoed over the whole lake and. Then there was another one, probably another 'creature's' call answering the first one.