This underground natural wonder is an amazing spectacle that resembles the awe-inspiring cascades of Niagara Falls within Mammoth Cave National Park.

As a winter chill sets in, a program called Code Blue is working to make sure no one is out in the cold in and around Niagara Falls.

Niagara Falls and Welland, and elsewhere in the region. "The frozen ground has a reduced ability to absorb rainfall," the federal weather agency says on its website. "Localized flooding in low ...