The hidden tunnels of Diamond Head
CRAIG T. KOJIMA / CKOJIMA@STARADVERTISER.COM
1 of 10
Brian Miyamoto of Hawaii Civil Defense and Denby Fawcett walk through the Kapahulu or Mule Tunnel. It is named after the mules that hauled construction materials through the tunnel on narrow-gauge railroad tracks.
Photos: Endless Summer Photo Contest
Photos: Island Images: August 2015
Photos: 2015 Hawaii Canoe Racing Association State Championship
More Photo Galleries »