Hakkaku Tunnel, Misato Town, Kumamoto Prefecture, Japan

(2:3)

Hakkaku Tunnel Aquascape

(8:52)

Undersea tunnel in Japan

(15)

Underwater Tunnel China!

(40)

Japan's TINIEST Tunnel

(31)

Tokyo’s hidden flood tunnels explained

(54)

Kumamoto - Sights to see

(1:46)

The LONGEST UNDER WATER TUNNEL IN THE WHOLE WORLD || JapanTravel ideas || Beautiful Japan

(16)

Why Japan is Hollowing Out a Mountain

(8:5)

WW2 SPECIAL PROJECT TUNNEL SYSTEM \

(1:7:22)

Sneaking Into A Top Secret Government Tunnel

(39)

Smooth ride inside the tunnel of Tohoku Shinkansen in Aerodynamically narrow and turbulence quench!

(12)

Highway Tunnels compilation. Japanese Tunnels are amazing !

(11:32)

How the world's longest underwater tunnel was built - Alex Gendler

(5:38)

THE LONGEST TUNNEL | Kyushu expressway (Japan ) #arnyamaguchi |

(3:40)

Tateyama Snow Corridor - 65 Feet High Snow Walls

(4:5)

癒しの八角トンネル（熊本） japan ruins Kumamoto

(51)

Remarkable Japanese constructions. Tunnels in Hokkaido #japan #japantourism#hokkaido #japanese

(1:1econd)