page_title: Subsoil
hierarchical_section_title: Subsoil
caption_attribution_description: English: Devon Culm Subsoil This is what is under your feet in this part of Devon. The subsoil is very stony and well-drained with a thin but fertile topsoil with a high clay content. This bank was cut into a fairly steep hillside. Agriculturally, this type of land is mainly used for grazing or forestry.
context_page_description: Subsoil is the layer of soil under the topsoil on the surface of the ground. Like topsoil, it is composed of a variable mixture of small particles such as sand, silt and clay, but with a much lower percentage of organic matter and humus.
  Clay-based subsoil has been the primary source of material for adobe, cob, rammed earth, wattle and daub, and other earthen construction methods for millennia. Coarse sand, the other ingredient in most of these materials, is also found in subsoil.
  Although by no means sterile, subsoil is relatively barren in terms of soil organisms compared to humus-rich topsoil.
context_section_description: Subsoil is the layer of soil under the topsoil on the surface of the ground. Like topsoil, it is composed of a variable mixture of small particles such as sand, silt and clay, but with a much lower percentage of organic matter and humus. 
  Clay-based subsoil has been the primary source of material for adobe, cob, rammed earth, wattle and daub, and other earthen construction methods for millennia. Coarse sand, the other ingredient in most of these materials, is also found in subsoil.
  Although by no means sterile, subsoil is relatively barren in terms of soil organisms compared to humus-rich topsoil.
caption: Subsoil layer
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