During the Processing phase, tribers previously placed on resource processing spaces (bottom spaces of the central part of the main board, marked with symbols of processed resources) process resources. Each such triber placed on a space corresponding to a particular resource lets you process any quantity of the resource once. You may decide to keep any quantity of resourc- es unprocessed.

To process a resource, take the appropriate number of resource tokens off thei initial space on the tribe board and place them on the target processed resource space. If the number of your resource tokens decreases or increases in the process, return or take resource tokens from the general pool. The exact process is carried out according to the arrows on the tribe board (see below).

If you have acquired cards enabling free processing, this is the time to use them (see: Cards).