"Indy's next move is amazing, graceful, and fast. His right hand slides up
under the back of his leather jacket and emerges grasping the handle of a
neatly curled bullwhip. With the same fluid move that brings Indy's body
around to face the Peruvian, Indy uncoils the whip to its full ten-foot length.
It flashes out to knock the gun from Barranca's hand to the ground, where it
goes off. Barranca runs away while Satipo watches, shocked and frightened."

-from the "Raiders of the Lost Ark" screenplay
Indy's trademark bullwhip was used as both a tool and a weapon. This
invaluable piece of equipment could provide passage across a bottomless
pit, or could be used to disarm an enemy. The bullwhip that Indy used on
screen was supposedly created by
David Morgan, and is still available for purchase today. A very similar whip is being offered by Western Stage
(formerly Mark Allen Productions), for slightly less than the David
Morgan (whose price steadily increases), but is arguably just as good.

Bullwhip Pictures | David Morgan Website | Western Stage Props