: Hiccup discovers the culprit is a Sandbuster , a territorial dragon that lives in a complex network of glass tunnels it creates by blasting sand with its super-heated fire.
In the second episode of Season 7 (often referred to as Season 5 on Netflix), titled " Sandbusted ," the Dragon Riders find themselves in a race against time to rescue one of their own from an underground predator. DreamWorks Dragons Season 7 (Dub) Episode 2
: The visual design of the episode is unique, featuring a glittering, fragile underground labyrinth that presents a different kind of flight challenge for Toothless. : Hiccup discovers the culprit is a Sandbuster