The mysterious image of the dragon Pozo inspired the architectural design of the event space with a viewing platform. Legend has it that he lived in Lake Velenje in ancient times, but he allegedly hatched beneath the Kozjak hill, breaking through the rock, and through this opening, water is said to have filled the Šaleška Valley. Lake Velenje has a history dating back more than 2.5 million years, stretching to a swampy valley with a lush forest, from which the famous lignite – coal mined by Velenje miners – was formed.