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California

Breaking through the mountain

Workers with the Metropolitan Water District of Southern California break through a wall of rock with a Tunnel Boring Machine during the final few feet of a four-mile section of the Inland Feeder system. The tunnel will eventually be a part of a 44-mile system transporting water from the Devil Canyon Portal to Diamond Valley Lake, near Hemet.

Workers with the Metropolitan Water District of Southern California break through a wall of rock with a Tunnel Boring Machine during the final few feet of a four-mile section of the Inland Feeder system. The tunnel will eventually be a part of a 44-mile system transporting water from the Devil Canyon Portal to Diamond Valley Lake, near Hemet.  (Mark Boster / Los Angeles Times)

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Workers with the Metropolitan Water District of Southern California break through a wall of rock with a Tunnel Boring Machine during the final few feet of a four-mile section of the Inland Feeder system. The tunnel will eventually be a part of a 44-mile system transporting water from the Devil Canyon Portal to Diamond Valley Lake, near Hemet.

Tunnel - Jump

Miner Scott Wardwell leaps while he exits the hole at the end of a four-mile tunnel he and fellow miners dug for the Metropolitan Water District of Southern California Inland Feeder.  (Mark Boster / Los Angeles Times)

Tunnel - Group

A group of miners walk away from the breakthrough hole at the end of a four-mile tunnel they dug for the Metropolitan Water District of Southern California Inland Feeder. The tunnel will eventually be a part of a 44-mile system transporting water from the Devil Canyon Portal ending at Diamond Valley Lake.  (Mark Boster / Los Angeles Times)

Tunnel - Heading back

A miner heads back into the tunnel after the crew created the breakthrough hole.  (Mark Boster / Los Angeles Times)

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