Shetland Islands Council is expected to back proposals to connect parts of the archipelago with an undersea tunnel system, according to multiple reports. The plan is described as involving tunnels linking some islands within Shetland rather than linking to the mainland. The estimated cost is reported to be up to £1.5 billion. The proposals are expected to be considered by councillors as part of the council’s decision-making process, although details on the exact route, scope, and timetable are not provided in the summaries. The reports indicate the initiative is intended to improve connectivity between islands, but they do not specify how this would affect travel times or existing transport links. No information in the provided excerpts confirms final approval, with the articles instead describing the council’s likely stance ahead of a vote or formal consideration. Overall, the coverage aligns on the expectation of councillor backing and the headline figure of the project’s potential cost.