The failed search for a 'proper' culvert in Durham lead to this selection of portals and tunnels.
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Durham's culverts 2013
![[IMG]](http://c5.staticflickr.com/8/7568/28090574660_1e07989c66_b.jpg)
![[IMG]](http://c4.staticflickr.com/9/8804/27758419043_9e698752d7_b.jpg)
![[IMG]](http://c2.staticflickr.com/9/8743/27758404113_ee8fe94165_b.jpg)
![[IMG]](http://c6.staticflickr.com/9/8184/28373497965_b60d08af56_b.jpg)
![[IMG]](http://c6.staticflickr.com/9/8595/27758389853_3e47318b40_b.jpg)
...Durham's culverts 2013
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