Mercers Quarry, Merstham to North Park Farm Quarry,

Excavation by S Hammond of TVAS of six lengths of a pipeline trench between the quarries revealed a series of prehistoric pits, postholes and linear features, many datable by the struck flint within them to the Mesolithic. A localised area of buried soil beneath colluvium may pre-date the Bronze Age, although it did not contain any datable artefacts. A medieval ditch and two post-medieval features, consisting of a pit cut by a substantial rubble wall foundation, were also revealed.