Fort Sinister (Franchise)

Forest Island, originally from the books, is a location introduced in Dragons: Rise of Berk.

Dragons: Rise of Berk
From April 22, 2016 until April 26, 2016, Toothless, if above Level 7, can search for Skullcrusher and Hobblegrunts in 6 hours. From August 30, 2014 to August 31, 2014, Toothless can search for Lump and the Snafflefang for 4 hours. He can search for the Rumblehorn and Skullcrusher from September 02, 2016 to September 05, 2016 in 6 hours.