The North West side of Holly Hill, above the village of Herne Hill in north Kent, shows a good example of instability affecting a London Clay slope. Photo 1 shows the this slope and the typical form of solifluction lobes (soil creep) in London Clay. They move slightly after a sufficiently wet winter showing fresh soil at the downslope edges.
Photo 2 shows the top of the slope to the south of Holly Hill, affected by a small rotational slip which extended into the field below the road.
Andrew Coleman
Rev. 30/12/2022
Geomusings 