The Victoria Tunnel is a railway tunnel located in Queensland, Australia. At 537 metres (1,762 ft), the tunnel is the longer of the two oldest railway tunnels in Queensland, the other being known as the 'Six Chain', either because it is 6 chains long, or is situated entirely on a 6-chain radius curve, or both. Both are situated on the Main Line from Brisbane to Toowoomba, being part of the first narrow gauge main line in the world.