What is the tunnel near milford sounds?
The road tunnel to Milford is called the Homer tunnel.
Why do the tunnel becomes dark and cold and also sounds very noisy while the train passes through a tunnel?
The scenery is rather grand with near vertical mountains rising straight from the sound. If you visit Milford Sound, be sure to take the boat trip out to the mouth of the sound. On the way to Milford, you'll pass through the homer tunnel set amid glacier scraped landscape, then down the Cleddau Valley in which you must pause for a look at the Chasm. There is an excellent visitor terminal at the harbour. I'd…