Timber ponds

For miles on the southside of the River Clyde east of Port Glasgow these wooden posts date back to 18th and 19th centuries. They are  preserved by the salt water and tell of ponds where rafts of hardwood timber were chained together imported from America and Europe and left to season. The location is close to where very many shipyards and sawmills were the market for timber until iron and steel ships were built on the Clyde and the use of the ponds declined.