Len Castle, stoneware lipped bowl with textured exterior, yellow sulphurous type glaze to the well. Diameter 28 cm. This bowl, from the geothermal series in the 1990s, invokes the mineral deposits in the mudstone at Waiotapu. The yellow glaze colour anticipates the yellow glazed sulphurous bowls made at the end of Len’s career. For a similar example see Len Castle Potter by Ron sang and Len Castle, page 147. Exhibited at the Rotorua Bathhouse Museum; 'The restless earth touches me’ and 'The big red’