Northfield Mountain Tunnel Portal

Northfield Mountain Tunnel Portal
Erving, Massachusetts (MA), US
Northfield Mountain pumped storage hydro plant contains an underground generating station blasted out of gneiss. The powerhouse is accessible through a 2,500-foot-long tunnel. Seven hundred feet below the surface, the cavern is longer than a football field and higher than a ten-story building.

The image shows the service road entering the only access to the tunnel. The underground powerhouse flooded during construction in 1972 and suffered a fire in 2002: http://www.masslive.com/news/parchives/f619tunn.html
Northfield Mountain pumped storage hydro plant contains an underground generating station blasted out of gneiss. The powerhouse is accessible through a 2,500-foot-long tunnel. Seven hundred feet below the surface, the cavern is longer than a football field and higher than a ten-story building.

The image shows the service road entering the only access to the tunnel. The underground powerhouse flooded during construction in 1972 and suffered a fire in 2002: http://www.masslive.com/news/parchives/f619tunn.html
View in Google Earth Tunnels, Power - Hydro
Links: en.wikipedia.org
By: skyeye

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skyeye
@ 2009-06-25 19:52:10
Here's a superior view of the portal;
http://ludb.clui.org/ex/i/MA3238/

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