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A Norwegian DiR 3 widens the free path at Hallingskeid, mainline Oslo-Bergen. The two adjustable rotary wheels are protected by debris-cutting propellers in front.

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© Svein Ulvund, used with permission. Svein Ulvund owns a photo website, featuring one of the most beautiful regions on this planet. (Yes, the author is biased. I have been there.)

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Last modified: 2003-10-06