The Longest Tunnels In Hawaii Have A Truly Fascinating Backstory

From Kauai’s stunning Waimea Canyon and Hawaii Island’s Kilauea Caldera to Maui’s Mount Haleakala, Hawaii is full of majestic natural wonders. The Aloha State is also home to several man-made wonders and pieces of architectural brilliance, including the longest tunnels in the state. Let’s take a look at these feats of engineering.

If you haven’t traveled through the Tetsuo Harano Tunnels along the H-3 Highway, you’re missing out on some of the best views of the Ko’olau Mountains you can find.