Troll cobbles

An illustration of a Mountain Troll on profile, showing several cobbles growing on its back

"It was a horrible sight. Twelve feet tall, its skin was a dull, granite grey, its great lumpy body like a boulder with its small bald head perched on top like a coconut. It had short legs thick as tree trunks with flat, horny feet."

Troll cobbles is the name given to the horny growths that often cover the thick skin of trolls.[1] Trolls seem to periodically shed these growths, which litter the floor of their caves.[1]


Notes and references

  1. 1.0 1.1 Illustration of Diagon Alley by Jim Kay from the Deluxe Illustrated Edition of Harry Potter and the Philosopher's Stone (see here).