Kameiwa Cave, also known as Nomizono Falls, is in Kimitsu city, Chiba Prefecture. The cave was created around 1660, during the Edo period, for rice paddy farming. It is surrounded by beautiful nature and you can enjoy different views in every season. It feels like stepping into a "Ghibli" movie!
This cave is famous for its heart-shaped reflection, created by sunlight shining through the cave, but it is only visible when the sunlight hits at the right angle.
Best Time to See the Heart Shape:
March and September: The best months to see the heart shape are during sunny days, especially before 7:30 AM.
Seasonal Highlights:
Spring: This is a great time to enjoy the fresh greenery. March is one of the best months to see the heart shape reflection!
Summer: Summer is perfect for enjoying the river. You can also see fireflies in late May to mid August at night, especially on humid nights after rain.
Autumn: September is busy since the heart shape and the chance to see the beautiful autumn leaves. The best time to see autumn leaves is in late November to early December. Bring warm clothes if visiting in the early morning or winter.
Winter: Winter is peaceful and quiet since there are fewer visitors. It is a good time to visit slowly, and you may have a chance to see the snow on the waterfalls.
How to Get There:
The cave is about 2.5 hours from Tokyo by train and requires 3 transfers.
If you drive, it takes about 1.5 hours.
Once you arrive, the cave is just a less than 10 minutes walk from the parking lot.
Safety Tips:
Be careful around the cave entrance. There could be loose rocks or a risk of falling rocks.