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“This is a big, big den for rattlesnakes. This is one of the biggest ones we know of,” Emily Taylor, a Cal Poly biology professor leading the Project RattleCam research, told The Associated Press.

Prairie rattlesnakes, like the ones in the mega den, can be found throughout Colorado. They are the largest and most common snake in the state, growing up to 35-45 inches. Rodents are their ...

"This is a big, big den for rattlesnakes. This is one of the biggest ones we know of," Emily Taylor, a California Polytechnic State University biology professor leading the Project RattleCam ...