Spend a full day on a guided trek from Karuizawa up to the Kazan-kan cabin in search of the protected Japanese serow. Expect steep volcanic ridgelines, dense montane forest, small-group guiding, and a strong chance to see serow, deer, and foothill birds.
More ways to explore the area's outdoor wonders
Mist moves through a lichen-dusted forest and sunlight breaks only in narrow bands between fir trunks as you climb. The guide slows, points, and all at once a compact, goat-like silhouette—black, grey and wary—holds still on a rocky ledge: the Japanese serow, watching back with quiet curiosity.
Difficulty
challenging
Duration
9 hours
Fitness Level
Requires a high level of fitness—comfortable on sustained climbs, uneven rocky terrain and hiking at elevation.
Wildlife
History
Local mountain routes around Karuizawa have long been used for seasonal grazing and forestry; cabins like Kazan-kan grew up to support hikers and shepherds.
Conservation
The area emphasizes low-impact wildlife viewing—guides keep distance, limit group size, and follow rules that minimize disturbance to the serow and alpine vegetation.
Reserve your spot on the Japanese Serow Watching Tour today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Start Early
Wildlife is most active in the morning; aim to begin at first light to increase sighting chances and avoid afternoon weather changes.
Quiet Observation
Bring binoculars and stay silent—guides position you at distance to reduce stress on animals while improving views.
Layer for Mountain Weather
Temperatures can drop quickly near 2,000 m; pack a windproof outer layer and insulating mid-layer.
Footing & Hydration
Trail includes loose volcanic rock and steep pitches—wear stiff-soled boots and carry at least 2 liters of water.
Sturdy hiking boots
Provide ankle support and grip on steep, rocky volcanic trails.
Binoculars (8–10x)
Increase your chance of identifying serow and distant birds without disturbing them.
Layered clothing + windproof jacket
Mountain weather changes rapidly—layers keep you warm and dry at high elevation.
Water (≥2 L) and high-energy snacks
Sustained hiking and altitude require steady hydration and calories.