From Populous Wiki
Wood are important objects on a map in Populous. They are used by braves to build huts, Boats and Balloons. Wood is collected by Trees that grow on the map. The wood once collected form a tree can be placed anywhere on land in the map.
Wood can be stacked in piles, the game then displays the whole pile of wood when you hover your mouse over the pile. This is used commonly by braves bringing wood to huts causing a pile to form at the front of the hut. After an long amount of time wood will disapear.
Amount of Wood for buildings
|Hut||Pieces of Wood|