Experiencing a really loud boom during the night? No need to worry, but it is startling and there have been many reports all around Haliburton and other parts of Ontario these past few weeks, of really loud earthquake like shakes and booms as the earth moves due to frost. This is due to the thaw then refreeze of water inside the ground and there is a name for them. They are called ice or frost quakes or the technical term Cryoseism. This is a natural phenomenon that normally occurs overnight.
Here is some background on them.