Bridge. There are two types of bridges based on its direction: vertical and horizontal. These bridges are necessary to cross the river (Island of the Ancients) and between islands (Ancestors' Atoll), but you have to restore them before you can use them.
Additional Costs specific for each bridge:
- Size: vertical , horizontal
- Can be found on: vertical , horizontal ; vertical , x2, , , horizontal , , x2, , ,
- Your tribesmen will be unable to get to the land on the other side if a tree, bush, mushroom patch, or other item spawns in the one square at either end of the bridge. Placing a slab of road or a bulding there will preven it from happening again.
- On Ancestor's Atoll, some bridges which are not yet built can be entered and build buildings in the land that doesn't yet have way to enter it.