abandoned rusty irrigation pipe to nowhere against tall grass in the cradleboard trail walking path on the carolyn holmberg preser

abandoned agriculture america background broomfield canal carolyn cement colorado construction control country cradleboard dam ditch early environment fall farm field flood floodgate flow flowing gate gear grass headgate holmberg industrial irrigate irrigation landscape lifting mechanism metal mountains nature nowhere old open path pipe plant preser preserve reservoir river rocky rural rusty sky sluice small spindle spring states system tall technology trail united walking water wheel winch