Quintette Tunnels
When constructing the railway through the roughest portion of the Coquihalla Canyon, chief engineer Andrew McCulloch determined that a routing proposed by his subordinates through this section was unnecessarily long or complex. McCulloch recalculated the requirements, and decided that a straight section of track through this area was required, and in order to achieve this, five closely aligned tunnels would be required. He also determined that two bridges would need to be built between three of the tunnels. These tunnels were eventually known as the Quintette tunnels. These tunnels are a popular tourist attraction, and are located along the existing Coquihalla highway (however they are not visible from the highway). These tunnels are also known as the Othello Tunnels.
Read more about this topic: Kettle Valley Railway