Draken: Rijders van Berk - Tunnel Visie

Seizoen: 2 - Aflevering: 4 / 25 - Eerst uitgezonden: 10 oktober 2013 - Episode ID: 824582

Hiccup discovers that the town's water shortage has been caused by the Outcasts' plan to hide Whispering Death eggs under Berk, which soon hatch and tunnel under the island, threatening the villagers.