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Undersea Tunnel is a tile improvement in Call to Power II.

Gameplay[]

Undersea tunnels enable travel between land-based Cities and Undersea Colonies, as well as provide an opportunity for land units to travel between continents without the need for a Transport unit.

Call to Power II Improvements
Advanced Farm Advanced Mine Advanced Undersea Mine Air Base Automated Fishery Drilling Platform Farm Fishery Fortification Hydroponic Farm Listening Post Maglev Mega Mine Mega Undersea Mine Mine Nature Preserve Net Obelisk Port Radar Station Railroad Road Shopping Mall Sonar Buoy Trading Post Undersea Mine Undersea Tunnel
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