> For the complete documentation index, see [llms.txt](https://docs.os.uk/osngd/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/osngd/code-lists/code-lists-overview/raillandcovertieravalue.md).

# raillandcovertieravalue

This code list is used in association with the OS Land Cover Tier A attribute which is present within the Rail Feature Type. The code list gives a high-level description of the land cover for this specific topographic feature, where known.

| Label           | Definition                                                                                                                                                                                                                                                                   |
| --------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Made            | A manmade surface that may be either sealed or unsealed.                                                                                                                                                                                                                     |
| Mineral         | Natural land cover that is mineral in nature, such as Rock, Boulders, Mud, Sand or Shingle.                                                                                                                                                                                  |
| Open Vegetation | An area of open vegetation, including Bare Earth Or Grass, Heath, Marsh, Peat, Rough Grassland, Saltmarsh, Scattered Coniferous Trees, Scattered Mixed Trees, Scattered Non-Coniferous Trees, Scrub, and Vineyard.                                                           |
| Trees           | An area that includes cone-bearing trees (for example, yews, pines, firs, and larch) and / or trees that do not bear cones (for example, Ash, Aspen, Birch, Horse Chestnut, Maple, Oak, Poplar, and Sycamore), where the trees are generally spaced not more than 30m apart. |


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