Swarmlands

The Swarmlands is a location searchable by Toothless in the game, Dragons: Rise of Berk.

Geography
There is an image that appears on Hiccup's Race to the Edge Map. However, it is rather nondescript - brown with no indication of contour or vegetation. However, based on its name, it is presumably covered with dense wetlands.

Other Appearances
The Swarmlands do appear on the Interactive Map on the Dragons: Race To the Edge website. The island thus far is not featured in this TV series, however.