2009-04-15 / Perspectives
"BREAKNECK" DAYLIGHT THROUGH GRANITE (Part 3 of 3)
Extending 600 feet in length, the marveled tunnel would measure 30 feet in width, ascending to a 22-foothigh clearance at the center line of its overhead. 14 feet would be the elevation from the base of each tunnel side to the beginning of the arched overhead.
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