Trench (CTP1)

Trench is a type of terrain in Civilization: Call to Power.
==Gameplay==
Trenches are inhospitable places for city sites as well as structures of any kind. The only s that can be built in this terrain, are , although at an increased cost.
==Great Library entry==
The deepest parts of the ocean, trenches are the sites where moving plates are destroyed as they plunge back into the Earth's mantle. In the 21st century, titanium alloy submarines allowed such trenches to be explored and eventually inhabited. However, while it became technically possible to build vehicles and compounds that could withstand the pressure of eight tons per square inch, it made little sense economically.