India's dam will divert some of the river down a 22km (14-mile) mountain tunnel to turbines.

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At Galore, a four-year construction project that included an 84-mile road across the wilderness, through a 2.5-mile mountain tunnel and over at least ten bridges.

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At Galore the four-year construction project includes an 84-mile road that will wind across the wilderness, through a 2.5-mile mountain tunnel and over at least ten bridges.

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While both teams were telling a story in the same universe, Stern said the creative process was like digging a tunnel through opposite sides of a mountain to meet in the center.

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About 45 minutes from the Los Cabos airport, you reach a tunnel that cuts 300 meters through a mountain.

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Aim high over the Hai Van Pass, ignoring the tedious tunnel that has been conveniently burrowed through the mountain.

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This loop also passes through the Sasso San Gottardo, a demilitarised tunnel that is part of a network of clandestine Swiss Army caves and tunnels built into the mountain and used as bunkers during WWII and the Cold War.

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