Kamikōchi is one of the Japanese Alps' most famous valleys, yet no private car has entered it since 1975. Visitors leave their vehicles at the Kama Tunnel and ride a bus into an eighteen-kilometre highland cradled at around 1,500 metres in the Hida Mountains. Down its centre runs the Azusa, a river fed by snowmelt and mountain springs rather than glaciers, so clear and cold that it glows turquoise over pale gravel. Above the beech and larch stand the 3,190-metre Hotaka peaks, the third-highest in Japan, and the steaming cone of Yakedake. The valley owes much of its fame to a British missionary, Walter Weston, whose 1896 book taught Japan to see these mountains as something to climb and protect. Today Kamikōchi is guarded as both a Special Place of Scenic Beauty and a Special Natural Monument, an honour Japan grants to very few places.
The valley's emblem is Kappa-bashi, a wooden suspension bridge named for the kappa water spirits of local folklore, where the Hotaka range lines up cleanly behind the turquoise water. Follow the flat riverside trails and the scenes shift slowly. At Taishō Pond, bleached tree trunks still stand in shallows that a volcanic eruption drowned a century ago, and on calm mornings the peaks hang upside down on the water's mirror. Japanese macaques pick along the banks, trout hold in the current, and ducks drift past unbothered by hikers. The valley opens only from mid-April to mid-November, then closes under deep snow. Come in October and the larches turn the slopes gold; early summer floods them with fresh green. Because the buses set a natural limit and the paths stay level, Kamikōchi rewards a slow, quiet day on foot rather than any hard climb.