Indians used a combination of drivelines, controlled harassment, and decoys to move buffalo herds toward a trap. At the Vore site, drainages probably helped keep the herd together and headed in the desired direction, while rows of stone cairns in nearby pastures indicate that man-made structures supplemented natural containment features. To keep the herd from scattering and avoiding the trap, the hunters tried to move the buffalo close to the sinkhole before causing them to stampede. In the final moments, they wanted the buffalo to panic, lower their heads, kick up dust, and think the danger was behind them, when the real danger was the sinkhole immediately ahead. Desperate to escape, most of the animals never saw the trap until they plunged over the edge. Over the centuries, tribes possibly used several different drivelines, but the primary driveline at the Vore site was probably from the west and right over this cliff. Many buffalo were killed or severely injured by the fall or by other large bison falling on them, and the injured were dispatched with arrows or other weapons.