Later it became one of the Journey locations for Toothless. Hiccup and Toothless went to Edge Cove to find out more about the Covecharger. Here, they need to defend it either from a Scauldron or the Dragon Hunters.
Possible rewards include: Runes (in-game currency), Collection Items for other game activities, Rare "Card" Packs, and Fish resources. Dragon eggs can also be found of the Covecharger, Sea Shocker, Scauldron, or Tide Glider.