English: Eastern portal of the BNSFCascade Tunnel located at Milepost 1700 on the Scenic Subdivision. The 7.5 mile long railroad tunnel is the longest in the United States. The eastern portal is the site of the 1600hp fan plant that scrubs the tunnel of diesel exhaust fumes after each train passes through.
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Eastern portal of the [[BNSF]] [[Cascade Tunnel]] located at Milepost 1700 on the Scenic Subdivision. The 7.5 mile long railroad tunnel is the longest in the United States. The eastern portal is the site of the 1600hp fan plant that scrubs the tunnel of
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