The sound of falling Redwood trees is what they used for the sound of At-At's walking in Star Wars: Return of the Jedi (those huge 2 and 4 legged walking machin

The sound of falling Redwood trees is what they used for the sound of At-At's walking in Star Wars: Return of the Jedi (those huge 2 and 4 legged walking machines). Boom, boom, boom. The Ewok scenes on forest planet "Endor" were filmed near the area of "The Avenue of the Giants" (Redwood forest) in N. California.