MAJOR plans to introduce a network of subsea tunnels between Shetland's islands have been approved by councillors.
The plans include replacing ageing ferries with tunnels from Shetland's mainland to Yell and from Yell to Unst within eight years.
MAJOR plans to introduce a network of subsea tunnels between Shetland's islands have been approved by councillors.
The plans include replacing ageing ferries with tunnels from Shetland's mainland to Yell and from Yell to Unst within eight years.