❄️ Spot Overview

Narusawa Ice Cave is a natural lava tube located in the Aokigahara Forest at the base of Mt. Fuji. Formed by the eruption of Mt. Nagao in 864, the cave maintains a year‑round temperature close to 0°C, creating impressive ice pillars and frozen formations even in summer. Visitors descend through narrow, low tunnels into a circular 150‑meter route that showcases ice walls, stalactites, and ancient lava textures. As one of Japan’s designated Natural Monuments, the cave offers a unique combination of geology, history, and adventure. It is also located near the Fugaku Wind Cave, making it easy to visit both sites together.
https://www.mtfuji-cave.com/en

💡 Useful Tips for Visitors

Very cold inside (around 0°C year‑round) — bring a jacket even in summer.
Low ceilings & narrow passages — not ideal for those with mobility issues.
Best ice formations appear in winter to early spring.
Typical visit time: 10–15 minutes inside the cave.
Wear shoes with good grip — floors can be wet and slippery.
Fugaku Wind Cave is 20 minutes on foot, ideal for a combined visit.

⭐ Highlights – Narusawa Ice Cave

Frozen subterranean world with ice pillars over 3 meters tall.
Historic lava tube formed by the 864 eruption of Mt. Nagao.
Constant near‑freezing temperature creating year‑round ice.
150‑meter circular route through dramatic lava formations.
Designated Natural Monument along with Fugaku Wind Cave.
Located in Aokigahara Forest, offering a unique volcanic landscape.

🚐 Access from Shimizu Port (Hinode Pier)

1. Taxi / Private Transfer – Fastest & Most Direct

Travel time: approx. 75–90 minutes

2. Public Transportation

If you plan to reach your destination by transferring between public transportation, please note that train and bus service is infrequent in this area.
For this reason, we do not recommend this destination for visitors on a day trip who do not plan to stay overnight.