Even in the Crystal Valley, every production begins with the preparation of the glass trunk. For centuries, glassmakers have been mixing silica-rich glass sands, limestone, soda ash and potash. The batch of strain fed into the melting process is called a charge and may also contain dyes or other substances that affect the properties of the glass. The sight of a flaming furnace is always fascinating. However, we recommend a visit especially on a cold day - it is always warm in the glassworks. You can also have lunch in several glassworks in the Crystal Valley. Head to Harrachov, Nový Bor or Lindava.