Ono

What it is

• The largest crater lake located within the Mount Akagi caldera.
• A designated part of the Gunma Prefectural Akagi Park since 1935.
• A water source that feeds the Tone River and irrigates southern mountain slopes.
• A high-elevation body of water sitting at 1,310 meters above sea level.

What to see

• Akagi Shrine situated on the Koto-ga-shima peninsula.
• The frozen lake surface during the winter months.
• A 2,200-meter tunnel used for local irrigation water.
• The Numao River where the lake water flows out.

When to go

• August 8th for the annual summer festival.
• Late December until early April to see the lake frozen.
• Winter months for wakasagi ice fishing on the lake.

Getting there

• Accessible by bus departing from JR Maebashi Station.

Notes written by Japan Gems from facts in Japanese Wikipedia.