The Bullwinkle Show

Rocky & Bullwinkle - Upsidaisium (20) - Mountain Mover or Boris Sneaks a Peak (2x90)

Air date: Nov 26, 1960

Bullwinkle inherits an upsidaisium mine in a mountain that flies because upsidaisium is an anti-gravity metal. The nation needs upsidaisium, so Bullwinkle and Rocky fly the mountain to Washington. Thwarting them at every turn are Mojave Max and Death Valley Dotty.