21.   One such practice mission, involving members of Delta Force, took place at an underground tunnel complex in Nevada operated by the Energy Department for nuclear weapons tests.

22.   One enters the Pushkin house through a neighboring gift shop, passing through an underground tunnel.

23.   The lovers spend much of the John Huston-directed film building an underground tunnel into a cemetery in hopes of bombing an official funeral procession.

24.   The magnets occupy an underground tunnel nearly four miles in circumference.

25.   The office buildings are connected to the Capitol through underground tunnels.

26.   The plants are wheeled to class through an elaborate underground tunnel system that protects against the cold.

27.   The system of underground tunnels is a major stop on free Olvera Street tours.

28.   The underground tunnel from the Kremlin also has its exit there.

29.   There is a cave with underground tunnels and a sparkling frozen lake.

30.   They contain not only classrooms, prayer halls, bunkers, testing fields and firing ranges, but sometimes underground tunnels and concrete storage facilities for weapons and chemicals.