Bolas were a secondary means of hunting, like the spear a throwing weapon. They were used throughout the prehistoric world.
A rope of either leather, sinews, or plant matter with weights attached to both ends. Ropes with a knotted third end were not uncommon, and these would have weights on each end as well.
Properly used, bolas had better range and accuracy than spears. They were used for capturing small and agile game food.