Akagisan Dai 1 (Akagisan Number 1) is a ski area located on the north-eastern slopes of the 1,674m Jizodake, by the side of Lake Onuma in Maebashi City in Gunma Prefecture.

At one time there were three ski areas by the lake. Akagisan Dai 2 and Akagisan Dai 3 are now both closed, but Akagisan Dai 1 remains in operation. However, the current ski area is a greatly scaled-down version of what it used to be and in recent years it has boasted of being the ‘self-proclaimed smallest ski area in Japan’!

At one time Akagisan Dai 1 was known as ‘the closest ski area to Tokyo'.

More information and photos here:

https://www.snowjapanhistory.com/gunma-maebashi-akagisan-dai-1