Nomizo Falls and Kameiwa Cave

濃溝の滝・亀岩の洞窟

3.8Est. 120Kimitsu, Kanto

Overview

Edo-era cave where morning light creates a heart-shaped water reflection in March and September.

A hand-carved Edo-era irrigation tunnel channels a stream through Kameiwa Cave, where morning light projects a heart-shaped reflection on the water's surface during specific weeks in March and September. The surrounding Shimizu Keiryu Hiroba park trails pass through dense forest along the stream. The phenomenon was relatively unknown until social media made it viral in the 2010s, yet it remains uncrowded on weekdays.

Practical info

Japanese name: 濃溝の滝・亀岩の洞窟
Nearest station: Isezakichojamachi Station (50 min drive)
Payment: Cards accepted
Reservations: not required

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