Arresting Photos of Chicago’s Deep Tunnel

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Amazing photos of DeepTunnel and related things.

These photographs present the three major portions of the southeastern section of the system: the Deep Tunnel, the Thornton Reservoir, and the Calumet Water Reclamation Plant. These interconnected facilities serve large portions of Chicago and its south suburban communities.

(via Exploring the Physicality of the Tunnel and Reservoir Plan – MAS CONTEXT)