The first test trains have entered the Metro Tunnel, a landmark moment for the biggest rail project in Victoria since the City Loop.  Two next-generation High Capacity Metro Trains entered the twin 9km tunnels at the South Yarra tunnel entrance and travelled 1.7km to Anzac Station, directly under St Kilda Road.

https://bigbuild.vic.gov.au/news/metro-tunnel-project/test-trains-enter-the-metro-tunnel