page_title: Wall
section_title: Retaining wall
hierarchical_section_title: Wall / Retaining wall
caption_attribution_description: Dry Stone Wall - Blackmile Lane, en:Grendon, Northamptonshire Picture by R Neil Marshman (c) RNM 23 May 2005
context_page_description: A wall is a structure and a surface that defines an area, carries a load; provides security, shelter, or soundproofing; or is decorative. There are many kinds of walls, including:
  Walls in buildings that form a fundamental part of the superstructure or separate interior rooms, sometimes for fire safety
  Border barriers between countries
  Brick walls
  Defensive walls in fortifications
  Doors, mobile walls on hinges which open to form a gateway
  Glass walls
  Permanent, solid fences
  Precast walls
  Retaining walls, which hold back dirt, stone, water, or noise sound
  Stone walls
  Walls that protect from oceans or rivers
context_section_description: In areas of rocky soils around the world, farmers have often pulled large quantities of stone out of their fields to make farming easier and have stacked those stones to make walls that either mark the field boundary, or the property boundary, or both.
  Retaining walls resist movement of earth, stone, or water. They may be part of a building or external. The ground surface or water on one side of a retaining wall is typically higher than on the other side. A dike is a retaining wall, as is a levee, a load-bearing foundation wall, and a sea wall.
caption: Dry-stone wall - Grendon
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