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World’s Largest Snake Gathering Turns Canadian Wilds into a Slithering Sea

Every spring, the Canadian wilds of Manitoba become a sea of nightmarish writhing snakes. A tangled mass of thousands of red-sided garter snakes come together in what is considered the largest snake-gathering in the world. After spending the long winter months in hibernation, they all come out for a bit of a breather, to frolic in the sun and perform their mating rituals.

The fascinating event takes place at the Narcisse Snake Dens, a few kilometers north of Narcisse, in Manitoba province. What makes Narcisse the ultimate rock-concert equivalent of the snake world? Well, the answer to that question dates back to the Paleozoic era, when the area of Manitoba was covered by an ancient ocean. The water doesn’t exist anymore, but the ocean bed still does – layer upon layer of thick limestone rock covers the region, with thousands of natural crevices, tunnels and caves. Rainwater seeps through these cracks and when the rock gives way near the surface, the resulting collapse forms a sinkhole.

The cold-blooded snakes happen to love these sinkholes, which are perfect for hibernation during the harsh Canadian winter with temperatures reaching 50 degrees below zero. So they migrate from far and wide and settle into the sinkholes, putting a good distance between themselves and the frost line. Because there’s a limited number of sinkholes, also known as den sites, all the snakes in an area have to go to the nearest den site. So there are literally tens of thousands of snakes crowded into just one sinkhole the size of the average living room.

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