page_title: Trench
hierarchical_section_title: Trench
context_page_description: A trench is a long, narrow ditch. It is like a tiny valley.
  Trench warfare has often been used in defense. Entrenched soldiers can be somewhat safe from enemy fire. Trench warfare made World War I longer than expected. The trench coat got its name from there.
  Several kinds of trench exist:
  Utility trench has pipes, wires, or other infrastructure
  Road trench carries vehicles
  Military trench provides shelter for soldiers shooting at each other
  Oceanic trench: For example, the Mariana Trench
  Rift valley
  Archaeological trench dug by archaeologists
context_section_description: A trench is a long, narrow ditch.  It is like a tiny valley.
  Trench warfare has often been used in defense. Entrenched soldiers can be somewhat safe from enemy fire.  Trench warfare made World War I longer than expected.  The trench coat got its name from there.
  Several kinds of trench exist:
  Utility trench has pipes, wires, or other infrastructure
  Road trench carries vehicles
  Military trench provides shelter for soldiers shooting at each other
  Oceanic trench: For example, the Mariana Trench
  Rift valley
  Archaeological trench dug by archaeologists
caption: Gas pipe being laid in a trench
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