Strange sounds in the sky above Terrace, B.C.
Some residents of Terrace, B.C. say there were awoken Thursday morning by strange, eerie sounds emanating from the sky.
At least three people recorded the unknown phenomenon and uploaded the videos on YouTube.
The videos have sparked a number of theories online about what could be causing the sounds, from seismic activity to electromagnetic activity to passing trains.
This isn't the first time similar sounds have been heard coming from the sky. There have been several accounts of the phenomenon in a number of northern communities in Canada dating back a few years. In 2011, the internet caught wind of it, with some dubbing it ''sky trumpets''.
In an interview with the CBC, a spokespeson for the city of Terrace said the sound was nothing more than a construction woker grinding down a blade on a grader. To calm fears, the city is going to try to recreate the noise, although it admits if some of the more creative theories are responsible, including an alien war, it would be great for local tourism.