The Argo Tunnel ID: 2004 | This file appears in: Idaho Springs’ Argo Mill & Tunnel Creator: Plazak (poss. pseud.) | Source: "Portal of the Argo Tunnel, Idaho Springs, Colorado, USA." Plazak (poss. pseud.), July 12, 2009. Wikimedia Commons (CC BY 3.0). https://commons.wikimedia.org/wiki/File:Argo-Tunnel-2009.jpg. Download Original File CreatorPlazak (poss. pseud.)Source"Portal of the Argo Tunnel, Idaho Springs, Colorado, USA." Plazak (poss. pseud.), July 12, 2009. Wikimedia Commons (CC BY 3.0). https://commons.wikimedia.org/wiki/File:Argo-Tunnel-2009.jpg. "The Argo Tunnel" appears in: Idaho Springs’ Argo Mill & Tunnel
