In Nishiwaga (西和賀町), a small town in Iwate known for its heavy snowfall, spring brings an extraordinary sight: a “sunken forest” that appears as melting snow from the Ou Mountains fills nearby lakes.

As the water level rises, trees along the shore become partially submerged, their trunks standing quietly in still water. On calm days, the surface turns mirror-like, reflecting the fresh greenery and sky. Visit early in the morning, and soft light with drifting mist adds an almost mystical atmosphere.

The best time to visit is from late April through late May, when vibrant new leaves contrast beautifully with the clear water. In 2026, water levels are expected to remain high through late May, giving visitors a longer window to catch this rare view.

One of the best vantage points is Yakichidai Park, where you can take in sweeping views of the submerged trees. From the Orose Suspension Bridge (open from May 1), the perspective feels especially dramatic as the forest stretches out below.

There’s also a cozy café, 111coffee, where you can relax with a drink while gazing out at the scenery. The park includes a campground and family-friendly play areas, making it a great stop even if you’re traveling with kids.

For a more immersive experience, head out onto the water. Canoe and stand-up paddleboard tours let you glide quietly between the trees, surrounded by reflections and birdsong.

It’s a peaceful, almost meditative way to connect with nature, and a rare chance to explore a “forest” from within.

If you prefer to stay on land, the lakeside along National Route 107 offers multiple viewpoints where you can stop and admire the sunken forest. The scenery shifts throughout the day depending on light and weather, so each visit feels a little different.

For something uniquely Japanese, hop on the JR Kitakami Line between Yuda-Kinshuko Station and Hotto-Yuda Station. From the train window, you’ll catch glimpses of the submerged trees alongside a striking red bridge, a view that feels almost cinematic.

This is the kind of landscape you won’t find in guidebooks year-round. It exists for just a few weeks, shaped entirely by nature’s timing. Whether you’re sipping coffee above the lake, paddling through the trees, or watching the scenery roll by from a train, Nishiwaga’s sunken forest offers a quiet, unforgettable slice of spring in Japan.

For a cozy, local stay, Shinseikan offers a classic ryokan experience with tatami rooms, soothing hot spring baths, and warm, family-run hospitality. Guests consistently praise the thoughtful meals and relaxed atmosphere, making it a great base after a day exploring the sunken forest.

If you’re looking for something more private and upscale, Yamado delivers a quieter, adults-focused retreat with in-room hot spring baths, garden views, and beautifully prepared local cuisine. It’s an ideal pick for couples wanting a more refined, slow-travel experience in the mountains.