DreamWorks Dragons (2012)

S1E17 Breakneck Bog

Title: Treacherous Marsh Plot: After learning that Trader Johann's vessel has sunk in a supposedly cursed marsh, Hiccup is determined to recover a precious gift from his mother that was aboard. Undeterred by tales of the bog's eerie reputation, he embarks on a daring quest, ready to face whatever challenges lie ahead to reclaim the treasured item.