Rock

Rocks are found scattered in the wilderness and are used to make arrows. They are more commonly found along shorelines.

Not to be confused with stones, which are bigger and used for construction.

Settlements are a good place to collect rocks (and a few stones) because you can walk around quickly without obstacles. After trading your cuts for lighter goods, you won't have to worry about becoming overencumbered. Another area with good amounts of rocks are hills and mountains which may be out of the way but are garunteed to have them.