This CityVille’s massive island feature has now been as Lava Rock Island. It’s free so long as you’re at least Level 47 in the game.
Islander Details :-
The Geological Survey community building allows for 2,500 citizens to live in your town, Volcano Tours business requires 395 Goods to operate, but returns 2,045 coins on the other side.
3 homes worth 2,000, 180 and 1,750 citizens each and the
Energy volcano itself that pays out four energy for every 200 Goods you supply it with, once every 12 hours.