Okay, I can do "chains"
Cockburn (south australia)
Heathcote (victoria)
Anabranch North (new south wales)
Ibusuki (kagoshima)
Nagashima (kagoshima)
Silverton (new south wales)
Cockburn

Heathcote

Anabranch North

Ibusuki

Nagashima

Silverton

My six letter word will be
VALVES, those little rubber things that stick out of the wheel where you pump up your tyres.