【4K ドライブ】日光第二いろは坂を走破｜いろは歌の由来や天海（明智光秀）伝説も解説

We will take a drive along the "2nd Irohazaka Slope" on Route 120, the uphill-only route of Nikko’s most iconic and scenic winding mountain pass in Nikko City, Tochigi Prefecture. Starting after a brief break at the "Umagaeshi Parking Area," we begin our journey from the fork where the 1st and 2nd Irohazaka slopes divide. Watch as we navigate up the steep, one-way incline, highlighting each of the 20 continuous hairpin turns named after the Japanese alphabet characters from "I" (い) to "Ne" (ね). In this video, we will explore the history and full text of the "Iroha-uta" (a traditional Japanese poem that gave the slope its name). We will also look into the history of the now-abandoned Nikko Tozan Railway (cable car) that once connected Umagaeshi and Akechidaira, as well as the latest update on the Akechidaira Ropeway, which is currently closed for renewal (as of our filming in April 2026). Furthermore, for history enthusiasts, we will share a fascinating historical mystery regarding the Buddhist monk Tenkai, who is said to have named the scenic "Akechidaira" viewpoint—legend has it that he was actually the famous samurai commander Akechi Mitsuhide in hiding. Please sit back and enjoy this refreshing 17-minute mountain drive in stunning 4K high quality, combining a thrilling driving experience with the beautiful scenery of the fresh green season. Please turn on Captions (CC) to enjoy the video with narrated commentary. [Timestamps] 00:00 Opening (Route 120 & The Origin of the Name "Irohazaka") 01:03 History and Full Text of the "Iroha-uta" Poem 02:20 Umagaeshi Parking Area (Rest Break & Departure) 02:51 Fork of the 1st and 2nd Irohazaka Slips (One-Way Beyond This Point) 03:20 Starting the 2nd Irohazaka Slope (Heading to the First Curve "I") 04:00 Driving the Continuous Hairpin Turns ("I" to "Ne") 13:06 End of the Hairpin Turn Section & Upcoming Highlights 13:33 Akechidaira & The Abandoned History of the Nikko Tozan Railway (Cable Car) 14:17 Akechidaira Ropeway Renewal Information (*Filmed in April 2026) 14:50 Origin of "Akechidaira" & The Legend of Monk Tenkai (Akechi Mitsuhide) 15:19 5x Speed Tunnel Section 15:38 Passing Through the Tunnel to the Lake Chuzenji Split 16:42 Right Turn & Ending (Next Stop: Kegon Falls) #Irohazaka #Nikko #DrivingVideo #4K #WindingRoad ・Filming Location: Nikko City, Tochigi Prefecture, Japan ・YouTube Audio Library Music: Regular Fun - Surf Ninja 3 Out On My Skateboard - Mini Vandals Amazement - Freedom Trail Studio Saturday Groove - John Deley Red Eye - E's Jammy Jams ・Equipment: Insta360 Ace Pro 2 DJI Osmo Action 6 ・Vehicle: SUZUKI Swift Sport (ZC33S) MT ・Editing Software: Wondershare Filmora 15