Canoe Tour at Lk Shima (四万湖カヌーツアー) is one of popular water activities in Gunma Prefecture. Lake Shima is an artificial lake located in Shima Onsen. Canoeing at Lake Shima is very easy for beginners because the water is very quiet and small lake. You can approach to right next to the nature.
Tourist Info.
There is parking and restroom.
Admission: 5,500 yen for adult. 4,500 yen for kids.
Course: 9:45, 12:30
In summer: 9:00, 11:30, 14:00
Time: 2 hours (about 70 min. on the lake)
Age: 4 or more
Access
Need a car go north of route 353.
5500 JPY
2 hr.
Let's learn MJER Iaijutsu. 
映画好き集まれ！ 
Lake Shima Canoeing Tour is a great activity in Shima Onsen. The Canoe is so easy that even little kids can enjoy. The guide will teach you how to paddle canoe and enjoy tour on the lake.
Note: They rent the shoes, but bring a clothing that is ok to be wet.
Don't look down from canoe. It will flip a canoe.
Official Web: www.lakewalk.jp