★
4.1/5

Nakayama-Zuido Tunnel

Nakayama-Zuido Tunnel, accessible from Ojiya City, is a fascinating feat of hand-dug engineering worth exploring. Despite some sections being closed off, visitors rave about its coolness in summer and awe-inspiring depth of 800m. While the eerie solitude adds to its allure, practical advice includes timing your visit as a quick stop during a Niigata trip. Appreciate the historical significance of this well-preserved tunnel, once used by Kakuei Tanaka, and marvel at its precision and maintenance, with clean facilities and parking available. Although restricted access may disappoint, the experience is a captivating glimpse into remarkable craftsmanship.