No, "Lair of the White Worm" here, but a 30cm worm would instill terror in me (unless Amanda Donohoe and Catherine Oxenberg were with me! Sorry, Sammi Davis...).
One of my earliest memories is of a 'giant' snake-like worm. It turns out it was a slow worm at about their full size, 50cm long, when I was a toddler.