Hanging_Lake_Tunnel_I-70_Glenwood_Canyon

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Figure 1. The Hanging Lake Tunnels on I-70 in Colorado were targeted in the state DOT’s resiliency planning. ThreadedThoughts | Flickr

Figure 1. The Hanging Lake Tunnels on I-70 in Colorado were targeted in the state DOT’s resiliency planning. ThreadedThoughts | Flickr