Really getting into these TSG, they're very fun and than you so much Leif Erickson for setting them up.
ATOLL
Tile Yield: 1 food, 1 production
Dependencies: The Colossus (+1 gold), lighthouse (+1 food)
Terrain Type: water
The Atoll is nothing special on it's own. It is simply a water tile that gives production instead of gold. For cities with large amounts of water tiles, production may be hard to find, so these tiles can be a blessing to have. While they can have no resources or improvements, they are considered salt-water tiles and are influenced by building the Colossus and lighthouse.
Straight out of the Civ 5 guide by Trickster.
ATOLL
Tile Yield: 1 food, 1 production
Dependencies: The Colossus (+1 gold), lighthouse (+1 food)
Terrain Type: water
The Atoll is nothing special on it's own. It is simply a water tile that gives production instead of gold. For cities with large amounts of water tiles, production may be hard to find, so these tiles can be a blessing to have. While they can have no resources or improvements, they are considered salt-water tiles and are influenced by building the Colossus and lighthouse.
Straight out of the Civ 5 guide by Trickster.