Spiral Tunnels

In the early 20th century, the Spiral Tunnels were constructed in Yoho National Park as an ingenious solution to the steep 4.5-percent grade of Kicking Horse Pass, allowing trains to navigate the challenging terrain. Located in Banff, Canada, these tunnels are a marvel of engineering, designed in a spiral configuration that allows long freight trains to cross their own paths as they travel in different directions simultaneously. Visitors can observe this unique sight, witnessing the precision and ingenuity of the design as trains wind through the mountains.