[TQ 831 662] During the survey of a derelict chalk quarry and brickworks near Otterham Quay lane, Rainham, a partly quarried away denehole was discovered 6.85m down the west face of the quarry. The denehole shows the usual trefoil pattern except that an attempt to form a chalk pillar had been made in one side of the chamber. Pick impressions of a short-headed iron pick were abundant on the walls and roof, and deep rope marks were found cut into the chalk at the base of the shaft. At least one other denehole has been disturbed in the past by quarrying operations; the outline of a blocked chamber could be seen in the chalk face of the quarry, but it was not possible to gain entry into the excavation. (1)

<1> Arch Cant 91 1975 182-4 (RF and J Le Gear) (OS Card Reference). SKE36033.