The second film in the Skyworks trilogy is a further exploration of light and sound, abstract images of lightning, fire, cracked earth, sparks and the filmmaker, LeAnn Bartok, dressed in white with outstretched arms walking on white sands intercut with skydivers and streamers falling out of airplanes to create the artist's signature Skyworks or free-falling undulating art in the sky. Making the film more evocative is a soundtrack performed by rubbing and banging a tape recorder against ice and using an antique gong to punctuate imagery.

"Three Mile Drop is yet more ambitious. A brief summary: at first we see black leader with small nicks and cuts that are seemingly echoed by comparable noises on the soundtrack. Then her camera appears to descend through layers of glowing air to a pool of water, followed by falling flames. We hear what seem to be footsteps, then static, and then a long traveling shot of a cracked and broken, dry riverbed. Short inserts of water appear, then Bartok appears on her back in the riverbed, more flames, falling ribbons of fabric from the sky, a skydiver in free fall. We see more flames but they do not seem to be falling now; descending ribbons unfurl over a landscape that has similar markings on the surface, then the ground changes to white sand dunes, then a snow-covered landscape, then Bartok with her arms perpendicular to her sides, like a crucifix, and contrasting images of her flowing garments with the regular, almost crystalline pattern in the soil."
-- Robert Haller, from his book Crossroads: Avant-garde Film in Pittsburgh in the 1970s