Categorizes archaeological features by their function, shape, or construction to facilitate the study of historical human activities. Categories include: domestic structures (e.g., homes), public and ceremonial spaces (e.g., temples, public buildings), economic and industrial areas (e.g., workshops, kilns), defensive structures (e.g., fortifications, walls), agricultural modifications (e.g., terraces, irrigation systems), funerary sites (e.g., graves, tombs), transportation routes (e.g., roads, bridges), and water management systems (e.g., wells, aqueducts). These classifications provide insights into societal organization, cultural practices, and technological advancements across various eras and regions.

feature_type_idfeature_type_namefeature_type_description
1BuildingStructure interpreted as having an enclosed space designated for living or other activities.
2Hunting pitPit interpreted as an animal trap
4FortificationDefensive structure, e.g. wall, earthwork, tower, fort, castle, fortified house
5LayerAny constrained sedimentological unit
6Grave/burialBurial of undefined type
7PitNatural or man made hole or depression of unspecified type
8Cooking pitPit interpreted as having been used for the heating of food. Often used to loosly categorize pits showing evidence of heating.
9WellPit showing evidence of having contained standing water, often evidenced archaeological by horizontal organic layers at the bottom and collapsed steep sides. Sometimes intechangable with watering hole or dew pond.
10CesspitPit or structure used for waste products and/or refuse.
11DrainLongitudinal pit or structure suggesting or showing evidence of the transporation of liquids or other materials.
12MiddenGeneral term for waste pit or refuse layers.
13Dark EarthGerneral term for cultural layers significantly darker in colour than surrounding sediments/layers.
14Floor layerLayer representing a previously active ground surface.
15StructureAny human made construction of unspecified type.
16RoadTransport surface layer.
17Stone settingStructure or composition of stones either marking a burial or of unknown purpose.
18WallStructure marking a boundary of, for example, a building or field. Most often but not exclusively made of stone, brick, wattle and daub, dung or turf.
19HearthFireplace
20Industrial depositsLayers formed by industrial activities of either known or unknown character, e.g. slag deposits, ash layers
21CoffinContainer for human remains, often made of wood, stone or lead and occasionally bark.
22Natural depositsLayer defined as having originated through natural processes without the assistance of humans. Definition may be complicated by issues relating to the extent and influence of human actions.
23Cist graveGrave formed by a confined space containing the remains of one or more individuals. Structure often made of stone slabs as sides and roof (dolmen), either subterrainan, partially or fully above ground. Cist graves often are or have been covered by a barrow (earth mound). Term may refer to the whole grave or just the burial chamber.
24Excavation unit/context/fillCoherent sediment context within an excavation, without apriori description
25TrenchA linear excavation feature. Although not structly a context bearing feature (as the trench is technically an absence of material) the term is sometimes used to label samples where no detailed contexts are given.
26Post holeA depression interpreted as having been made by a larger, often wooden (but occasionally stone), object piercing the ground and subsequently filled with sediment. The term is commonly used to describe impressions left behind from fence posts or roof bearing posts and overlaps to an extent with stake hole.
27UndefinedNo feature description available
28FillSingle context term used to describe the material within a constrained excavation unit or cut feature.
29RoofUpper covering of a structure. The bit that stops the rain getting in.
30Stake holeA depression interpreted as having been made by a smaller, often wooden (but occasionally metal), object piercing the ground and subsequently filled with sediment. The term is commonly used to describe impressions left behind from fence posts or roof bearing posts and overlaps to an extent with post hole, but is less common.
31DitchA linear depression feature of unspecified size.
32FoundationStrucural support for a building or other construction (such as a wall)
33DrainStructure provided for the removal of water or water borne material for either waste disposal or drainage.
34EnclosureA generic term used to describe an area separated from its surrounding by some form of boundary. The boundary may consist of an earthen mound (which in itself may be the remains of an earlier construction), stones, fences or walls, to name but a few.
35LynchetA terrace like earthen bank features resulting from the long term ploughing across slopes.
36KilnA type of oven (thermally insulated chamber) for heating in the context of production or industry. E.g. brick kiln, pottery kiln. A large variety of types exist and there is some overlap in definitions between oven, kiln and furnace.
37OvenA thermally insulated chamber used for heating, most often used in the context of food preparation but may overlap with kiln or furnace by usage.
38FurnaceA type of oven (themally insulated chamber) used for heating in the context of household heating or industrial processes (e.g. metallrgy). Some overlap with kiln occurs and there is variation in usage between British and American English.
39Vessel (container)Any type of container for the storage or utilisation of products, especially food or drink. May also refer to containers used in industrial processes, such as smelting or for the storage of raw materials.
40Cultural layerA layer of earth containing traces of human activity or habitation. Often represented by the inclusion of waste material (bone, wood etc.) and/or artefacts and anomolously high values for indicator elements (e.g. phosphates). The term is often used during excavation to describe layers considered of particular archaeological interest, and as such often an a-priori construct.
41Wall trenchA structure interpreted as having been an excavation depression for the anchoring of a building’s wall or for the placement of its foundations or posts. May or may not contain evidence of post holes.
42Pit-house floorLayer consisting of occupation material/debris or compacted sediments interpreted as the floor of a subterranian dwelling, storage building or building used for other cultural activities. The term sunken featured building floor is sometimes used as equivalent or so as to avoid the implication of habitation in the structure.
503BarrierNULL
504BeamNULL
505Border markerNULL
506BridgeNULL
507Collection pit (tar)NULL
508ContainerNULL
509Doorsill timberNULL
510Dragare (translation pending)NULL
511Fill layerNULL
512Floor joistNULL
513GabionCage, cylinder or box filled with rocks, concrete or sometimes sand and soil for use in civil engineering, road building, military application and landscaping
514GrillageA framework of timber or steel for support in marshy or treacherous soil
515Horse ginNULL
516Jetty/QuayNULL
517Palisade(in water)NULL
518Pile bridgeNULL
519Pile of logsNULL
520PilingsNULL
521PlatformNULL
522PoleNULL
523PostNULL
524QuayNULL
525RevetmentNULL
526Road constructionNULL
527Roast bedDeposits resulting from the roasting of ore.
528SillNULL
529Sill logNULL
530Sill or foundationNULL
531Slag depositDeposits of slag resulting from metal production.
532Stone sillNULL
533Storage pitNULL
534Tar funnelNULL
535TimberNULL
536Timber storageNULL
537Top-board (Pipe organ)NULL
538Water gutterNULL
539Wooden featureNULL
540Wooden floorNULL
541Wooden house foundationNULL
542Wooden plankNULL
543Wooden sillNULL
544Wooden trackwayNULL
545Wooden tubNULL
546Wooden wallNULL
547ProfileA wall of a trench/test pit in an archaeological excavation, depicting the layers at the site and often sampled.
548Excavation areaNULL
550UnknownFeature type is either of a unknown character or not specified
551Settlement siteA site previously inhabited where worked objects, raw material, refuse and/or remains from buildings are left.
552Settlement site and monasteryNULL
553Settlement site and wetlandsNULL
554Setlement site and iron production siteNULL
555Grave/burial and settlement siteNULL
556Crafts siteNULL
557Iron production siteNULL
558Tiled kiln factoryNULL
559MonasteryNULL
560Cult siteA vague term which alludes to the site having a religous/ceremonial character.
561ChurchNULL
562Trading siteNULL
563PalisadeNULL
564Pile dwellingNULL
565Unprocessed clayNULL
566Heap of fire-cracked stonesA heap of stones that have cracked and weathered due to heating.
567City layerA cultural layer of a city character.
568Brick kilnNULL
569Settlement site?NULL
570Grave/burial?NULL
571Trading site/Settlement siteNULL
572HoardA collection of items intentionally deposited in the ground
573Surface findObject found exposed in the surface layer without any connection to its original context.
574Waste containerContainer that stores waste product.
575Ground gutterDrainage system installed beneath the ground.
576CastleA fortified structure.
577AbutmentStructure supporting the ends of a bridge.
578DamBarrier that restricts water flow.
579Tannery vesselVessel used for tanning.
580FloorA flat surface of a room or area which you walk on, it may consist of compacted dirt or other material such as wood and stone.
581FlooringPermanent covering of a floor in a building that makes up the walking surface.
582DockOne or a group of structures on or near a shire, used to handle boats or ships.
583Wicker structureA structure made using plants and the wicker weaving method.
584Quay/WharfAn area used to dock and unload people and cargo. Unspecified if it is for ships or boats.
585Log constructionAny kind of construction made out of logs.
586Charcoal kilnProduction of charcoal.
587Timber framed houseA distinctive style of building, with heavy timbers used as framing.
588CellarRoom under the ground floor.
589Fortified towerA defensive structure that forms a part of fortifications such as castles or defensive walls.
590BoxContainer made out of different materials, e.g. wood or other plant material.
591TrunctuationAlso referred to as a ‘cut’ refers to the cutting away of a deposit or a structure. E.g. a cultural layer may be trunctuated by a pit constructed at a later point in time.
592Test pitAn archaeological test pit to survey for cultural remains.
593Pile bedA collection of piles deposited together
594Pile rowNULL
595GutterA depression designed to collect fluids, but not necessarily a street gutter.
596Post-and-Plank buildingA building type where sturdy posts are placed vertically for primary support, and planks are fitted horizontally to create walls.
597Stave ChurchMedieval wooden Christian church building that used to be common in north-western Europe. Built using the post-and-lintel construction method.
598Stone coffinNULL
599PortA place for ships to load and discharge cargo and passengers. This may encompass one or multiple wharves and loading areas.
600LogboatBoat made from a hollowed-out tree. Also referred to as dugout canoe.
601Log coffinNULL
602SupportA support structure for buildings and constructions
603Wood remainsWood remains where it is difficult to discern its original purpose.
604Brick floorSurface constructed from individual bricks (made from clay) laid like tiles, with or without mortar or grouting.
605Tar kiln outletTar kilns are often constructed in a slope, with the outlet for the tar positioned below the kiln. Outlets were typically a hollow log, chute or similar.
606Wooden bridgeNULL
607Wooden coffinNULL
608Wooden structureNULL
609Wooden gutterDrainage system
610Wooden pipeWooden water pipe
611BarrelNULL
612Bedding layerMaterials that provide a bed, flat layer, for a structure or building. E.g. debris from demolished buildings used to form a base for a road.
613CarriageNULL
614MoatA deep and wide trench surrounding a fortification.
615Water pipeNULL
616DrawbridgeA type of movable bridge used with fortifications and bridges.
617StorageNULL
618ShipwreckNULL