In the Canadian province of Manitoba, the Narcisse Snake Dens is the provincial wildlife management area, which is located in the Rural Municipality of Armstrong. These dens are the winter home of approximately 100,000 red-sided garter snakes. These sinkholes are believed to contain the largest gathering of this species anywhere on the planet. Their winter shelters lie deep within caverns carved out of water-smoothed limestone beneath the surface. When spring arrives, the snakes emerge from these underground dens and gather in the pits to mate. Once the breeding season ends, they gradually disperse into the surrounding marshlands, where they spend the summer months feeding and roaming.
