CENTRAL CLAY is one of the oldest pottery web tours, boasting around 120,000 hits per year. We have visitors from around the globe; ranging from Italy to India, New Zealand to Norway, and Switzerland to South Africa. Many international visitors, as well as CENTRAL CLAY is one of the oldest pottery web tours, boasting around 120,000 hits per year. We have visitors from around the globe; ranging from Italy to India, New Zealand to Norway, and Switzerland to South Africa. Many international visitors, as well as potters from the U.S. are attracted to the glaze pages. If you have any glazes you would like to post, please email them to me If you have any glazes you would like to post, please email them to me