Underground parts of fence fortifications in Siberia in the late 16th – early 18th century

The article presents the results of a study in the design of the underground part of the fence walls in wooden defensive structures. It was established that to date this issue has not been properly developed. The source base consists of the results of archaeological research and data from written sources. The paper provides information on the depth and width of the fence grooves, their shape and the interdependence of these parameters. The author established the fact that there existed a standard for deepening fence into the ground. The issue of the multiple fence walls is considered in detail. It is proved that such fence structures did not exist, but the “multiple fence” pattern recorded on some sites is only a reflection of repairs of fence walls as well as the presence of retaining walls and supporting structures of platforms. It was found that the fence posts were dug into the ground rather than clogged. The latter technique was typical for the pillars of auxiliary structures at the fence.