Guide
Located within the Shimizu Keiryu Plaza, "Nokogurino Taki (Kameiwa Cave)" is one of Chiba Prefecture's most iconic photogenic destinations. The greatest draw is the mystical phenomenon where the morning sun streams through the cave opening like a spotlight, illuminating the rock face and the river surface to create a perfect, glowing "heart shape" on the water. This breathtaking sight has gained worldwide attention on social media, offering a truly precious experience for travelers seeking an artistic moment captured by nature.
This site is part of the Shimizu Keiryu Plaza, a natural park located in the upper reaches of the Sasakawa (Kobotai River) system in the Boso Peninsula. While the area has long been cherished for its rich natural surroundings, the specific geological formation of the cave and the precise angle of the seasonal sunlight have been rediscovered in recent years as a modern symbol of beauty—the