detail of an iron water mill axis located on the river ter as it passes through the small town of camprodon girona - spain

abandon abandoning ancient antique architecture axis building camprodon circular connection cutter detailmill energy engine engineering gear gears green grind hydropower industrial industry iron locomotive lubricating machinery mechanical mechanism metal metallic mill millstone motor old olden power river rotate rotation spindle steam steel technology ter traditional transmission vintage water watermill watermilling wheel wheels