Jigokudani Snow Monkey Park

The name means “Hell Valley” — for the steam that hisses out of the frozen ground here in the Nagano mountains. But Jigokudani is famous for something gentler: troops of wild Japanese macaques that climb down from the cliffs each winter to soak in a steaming hot-spring pool, snow gathering on their heads while they sit chest-deep in warm water.

Why It’s Interesting

It is the only place in the world where monkeys are known to use a hot spring this way — a behavior the local troop learned decades ago and passed down. Watching a wild macaque half-close its eyes in the heat, snow falling around it, is the kind of scene most people only know from photographs. Here it’s right in front of you.

Best Time to Visit

The monkeys come to the bath all year, but the picture you’re imagining — snow-covered macaques in steaming water — needs winter, roughly December through March. Pick a genuinely cold, snowy day and the whole troop crowds in.

Getting There

This takes a little effort, which keeps it honest. From the parking area (or the Kanbayashi Onsen bus stop) it’s a roughly 1.6 km, 30–40 minute walk through forest to reach the bath. In winter the trail is snow-packed and can be icy, so wear proper boots. Keep your distance, never feed them, and let the monkeys ignore you — that’s the deal.