Suddenly a vibrant shade of blue, a frozen waterfall is a mystery that has captivated a small town in Wolcott, New York.
Wolcott Falls Park looked like a tourist spot Thursday (3/6) after photos of the blue waterfall started to circulate on social media.
Dozens of people stopped by to take pictures and talk theories about the blue falls.
While it's cool to look at, the color raised concerns for some people.
According to the Department of Environmental Conservation (DEC), preliminary tests samples showed it does not look like the color change is anything that could harm the environment or habitat.
The DEC was still waiting on test results to find out what the blue substance is, but believes it's some type of dye and this could all just be a colorful prank.
A popular theory around town is that it's copper sulfate.
The blue, moderately toxic substance is commonly used to kill algae in farm ponds.