26
Aug
Clay in Cornwall
Cornwall is widely recognised for having geological diversity and an abundance of mineral wealth. Most famously these days, is the extraction and processing of China clay and, not too distant in the past, the mining of tin.
Perhaps not so well known and possibly over-looked is the presence of clay. Clay is be found below the top-soil and upper surfacing nearly everywhere in Cornwall, the exception being the granite outcrops of Bodmin Moor and the Lands End peninsula.
Clay has been (and still is) used for cob building in Cornwall.
The clay was relatively easy to extract because of its close proximity to the surface.
Typically, the excavation would be the location for the cob building.