Hidden Tokyo Subterranean Stream
Constant 11-12°C temperature throughout all seasons, refreshing in summer and warm in winter.
Otake Limestone Cave & Underground Stream
Designated as a Natural Monument of Tokyo, Otake Limestone Cave in Akiruno is a 330-meter underground labyrinth discovered in 1961. Visitors explore the narrow natural rock fissure wearing helmets while listening to underground mountain streams bubbling beneath stalactites.
- Best time
- All year
- Entry
- Not checked · Check the official site ↗
- Parking
- 大岳鍾乳洞駐車場 · 1 min walk · Navigate ↗
- Getting there
- Plan the route from your start ↓ · Open in Google Maps ↗
- Official info
- commons.wikimedia.org ↗
💡 Reference photograph; views and access can change.
📷 Syohei Arai · CC BY-SA 4.0 · Source
Weather for your date
Today shows live hourly weather. Future dates show the best available report.
24°C
Partly cloudy
💧 0% rain chance · wind 3 km/h
Hourly forecast
24°💧 0%
21°💧 0%
19°💧 6%
18°💧 16%
18°💧 21%
18°💧 21%
18°💧 18%
18°💧 15%
Forecast: Open-Meteo
Directions to Otake Limestone Cave & Underground Stream
Leave the start blank to choose your current location in Google Maps. The pin is an approximate landmark; check the entrance and live services in Maps.
When to see this place
Typical viewing windows. Weather and bloom dates vary each year; these are not live forecasts.
Suitability
Stroller: Not recommended
Nursing room: Not available
Noise level: quiet
Kids: Hard helmets provided at ticket counter; low ceilings require ducking.
Rules
Fire: no fire
Drones: banned
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Within 30 km, closest first.
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Sources, photo credits and verification
Place information: Official tourism source
- 1. Ancient stalactite and speleothem formations inside Otake Limestone Cave in western Tokyo · Syohei Arai · Source ↗ · CC BY-SA 4.0