concrete cube stabilizing metal water pipe of small hydro-power plant in forest in jasenie

water pipe small hydro-power plant jasenie nizke tatry national park summer low tatras mountains slovakia operation 1924 owned nearby ironworks factory zeleziarne podbrezova pipelines collect three valleys reservoir pipes 850m-long pipeline feeds inflow metres yields generated pelton-type turbines smaller single-blade turbine two-blade handles forest green trees blue sky clouds gate