This documentary film series chronicles the lives of a tight-knit company of rock technicians as they remove boulders as big as automobiles, manhandle 1,000-pound hydraulic drills and stab 30-foot steel rods into sheer rock, all while hanging hundreds of feet above the ground.
Era sui canali:
Immaculate 
Zodiac 
Passaggio a Nord-Ovest 
The Story of God with Morgan Freeman