Geoarchaeologial and enviornmental evaluation of the Medway Tunnel engineering scheme indicate exceptional preservation of wood, pollen, mollusca and other invertebrates. In-situ archaeological material of probable Late Neolithic/Early Bronze Age and Iron Age date was recorded at the Eastern Approaches, and evidence of occupation and activity ranging from early to mid-Neolithic through to Romano-British periods was recovered by the subsequent excavation in that area (WX6566) reported fully elsewhere.