Data from an Archaeological Monitoring at North Portal, Great Missenden, Buckinghamshire, 2019-2021 (HS2 Phase One)

This collection comprises images, GIS, spreadsheets, and an interim report from archaeological monitoring conducted by INFRA Archaeology on land at North Portal, near Great Missenden, Buckinghamshire. The monitoring took place from November 2019 to January 2020 and focused on ground-breaking works associated with the construction of a compound, haulage road and pylon bases for the National Grid and Balfour Beatty works to realign a large overhead power cable.

The works only exposed the upper surface or interface with the subsoil in places and no archaeological features were noted cutting through the topsoil or subsoil where it was exposed. The finds recovered within the topsoil were dated similarly to other finds recovered from the evaluation and mitigation of North Portal and are not significant. The archive presented here would be beneficial to any further work as it provides examples of the area's depth of archaeological horizon.

本数据集收录了INFRA考古事务所（INFRA Archaeology）在白金汉郡大米森登附近北门户地块开展考古监测所获得的影像、地理信息系统（GIS）数据、电子表格及考古监测中期报告。本次监测时段为2019年11月至2020年1月，监测内容为配合英国国家电网（National Grid）与巴尔福·比蒂（Balfour Beatty）的相关破土作业，作业内容包括搭建作业营地、铺设运输道路及建造输电塔基，以重新布设一条大型架空电力电缆。
本次作业仅在局部区域揭露出上层土壤与底土层的接触面，在所揭露的表土及底土层范围内，未发现有考古遗迹切穿其中。从表土层中出土的遗物，其年代可与北门户地块考古评估与遗址保护工作中出土的其他遗物相匹配，并不具备重要考古价值。本次收录的档案资料可为后续相关考古工作提供参考，因其直观展现了该区域考古文化层的厚度特征。