Imagine Connecticut: mountains as high and as sharp as the Himalayas, volcanic activity, and ancient earthquakes shaking the ground -- much more powerful than those we feel today. To understand how this happened, we need to dial the clock back just a little bit... about 300 million years.
That's when the supercontinent of Pangea was taking shape, and an ancient landmass housing modern-day Africa and South America had slammed into Connecticut's coast.
The collision drove up mountains and transformed the North American landscape. It also formed a rock boundary in Connecticut called the Lake Char fault zone.