As a family with two kids living in urban Tokyo, family-friendly nature activities are must-do for our trip so that kids can learn something about our planet.
First, we did a light hiking beside Kawazu Nanadaru, seven waterfalls located along the upper course of Kawazu river. It takes just 20-30 minutes to reach Kamadaru, the one situated at the highest point. Each of seven waterfalls is unique and water creates mysterious color.
Though I am not an expert, trip around Izu stimulates our curiosity for geology. Volcanic activities in the past contributed to develop geographically unique features, such as columnar joint rocks considered to have been created via cooling of the host rock mass. We saw such rocks in Izu peninsula including Kawazu Nanadaru.