In this episode, we explore one of the largest snake dens on Earth, home to over 75,000 red-sided garter snakes. From their synchronized emergence to the eerie spectacle of mating balls ...

The San Francisco garter ... the garter snake as well as its preferred prey, the California red-legged frog. In 2008, we filed a notice of intent to sue the city of San Francisco for illegally killing ...

the male snakes are eager to mate with them, forming a mating ball, where one female is surrounded by up to one hundred males. The best time to witness this spectacular annual snake orgy ...

Well, the Narcisse Snake Dens are home to the largest gathering of snakes on the planet Earth. Every year, nearly 75,000 red-sided garter snakes emerge and cluster in limestone sinkholes ...