A landslip/debris flow in bilsdale, North York Moors, September 1976

The conditions prior to and the site and results of a debris flow are described. Baseline data collected after this extreme event are outlined. Similarities between antecedent conditions of this flow and others reported in the literature are noted. From the field evidence comment is made on the mobile nature of the flow which may be analogous to spontaneous liquefaction in sands.