![](http://www.alamy.com/thumbs/6/5F1C16EF-D7A9-4532-A893-150AC06051DB/2AJMG4W.jpg)
Railway electrification system - Concrete counterweights hanging from a pulley system. It keeps railroad's overhead catenary wires in correct tension
Size: 3825px × 5730px
Location: Schladming, Austria, Europa
Photo credit: © Tomasz Koryl / Alamy / Afripics
License: Royalty Free
Model Released: No
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