Bohemia Interactive offers a Tanoa reveal trailer showing off the terrain and other aspects of the environment in an Arma III expansion they plan to release in the first half of next year. Here's word:

The video offers a first glimpse of Tanoa – a South Pacific archipelago with a land mass of over 100 km2, and home to lush tropical vegetation, unique landmarks, a rich history, and imposing man-made feats of modern engineering. Besides the new Tanoa terrain, the Arma 3 expansion will include new vehicles, weapons, attachments and gear, characters, playable content, and more. The expansion is scheduled to be released in the first half of 2016 and will be distributed as DLC for the base Arma 3 game.