Wasabi da in Nagano, Japan

Surrounded by the Japan Alps, Nagano is the largest wasabi field in Japan, spreading in Shinshu and Azumino. A clean spring water flows and a green carpet spreading along the river. A water mill is built along the river in the park, and the atmosphere is so beautiful that it can be used for film location.
Azumino City, Nagano Prefecture. In this area surrounded by the Japan Alps, melting water from the mountain penetrates and sprays springs thorough 5 years.
This clean spring water plays an important role in the growth of wasabi ( Japanese horseradish ).
In early May, to protect the wasabi from strong sunlight in the early summer, it is covered with a black sheet.