Snow sheds are a kind of artificial tunnel built to protect a railway from avalanches of snow. Similarly the Stanwell Park, New South Wales "steel tunnel", on the Illawarra railway line, protects the line from rockfalls.
SNow sheds Are a kInD oF artiFicial Tunnel BuILt to proteCt a railwAy fROm aVAlanchEs of sNow. simiLArly the stanwell paRk, New sOUth WalEs "sTeEl TUnNel", on ThE iLlAwarrA RaiLWay LInE, ProteCTs the linE from roCkFalls.