Kōzushima (神津島) is a volcanic island in Tokyo prefecture, about 170 km south of Tokyo city in the Philippine Sea. It is one of the Izu Seven Islands group of the seven northern islands of the Izu archipelago. Kōzushima is also within the boundaries of the Fuji-Hakone-Izu National Park.

Understand

The island is administered by Tōkyō and is about 30 km (19 mi) northwest of the Miyake-jima and 14 km (8.7 mi) southwest of the Nii-jima. Kōzushima is administratively part of Kōzushima Village under Ōshima Subprefecture of Tokyo Metropolis. As of 2017, the island's population was 1,952.

The island was recognized as a Dark Sky Island by Dark Sky (formerly International Dark Sky Association) in 2020.

Tourist information site

The local tourist association has a Japanese-only guide site with integrated Google Translate.

Get in

Tokaikisen operates a daily overnight ferry from Tokyo's Takeshiba pier, near the Daimon metro station. Leaving Tokyo at 22:00, and arriving 10:00 - prices vary seasonally but expect to pay around ¥6500 for a reclining seat.Ferry service is also available from Shimoda.

Do

• 1 Mt. Tenjo. 
• Kozushima Hot Spring Center. 10:00-21:00 (entry until 20:00), Closed:Wednesday. Public bath. saunas, jacuzzis, indoor hot spring facilities, and a vast open-air bath. Swimsuits required for open-air bath only. Adult ¥800, 15-under ¥400. 
• Akazaki Shiokaze Wooden Trail (15 minutes by bus from Kozushima Port). Wooden walking course reaches of the Akasaki coast on the north side of the island. 

Diving

• Dive Nangoku, ☏ +81 4992-8-0604, nangoku.kozu@gmail.com. Spoken languages Thai, English & Japanese. 
• Aqua Mate Diving Club (アクアメイト), ☏ +81 4992-8-1740, mail@aquamate.jp. 
• Tears Blue Diving, ☏ +81 4992-8-0888, t-blue@dream.ocn.ne.jp. 

Eat

In low season, all the restaurants on the island might be closed. Bring your own food or have the ability to cook your own food if you are staying at a campsite. There are also a few shops in town where you can buy groceries.

Drink

Kozushima Shōchū

Sleep

• Takouwan camping ground (多幸湾公園ファミリーキャンプ場), ☏ +81 4992-8-0661, takou_camp@vill.kouzushima.tokyo.jp. Deck tent: ¥1000 per person per day, free tent: ¥400 per person per day. 
• Hotel Kozukan (ホテル神津館), ☏ +81 4992-8-1321. from ¥10,500 per night per person (dinner and breakfast included). 
• Syusou (Ryokan) (旅館秀蒼), ☏ +81 4992-8-0883, info@syuso.com. ¥7500 per night per person (dinner and breakfast included).