The prehistoric archaeological complex Provadia-Solnitsa is located near the modern Bulgarian town of Provadia. Its remains date back to 5500 to 4250 BC. The emergence and development of the complex are directly linked to the large and only one rock salt deposit in the Eastern Balkans. it is suggested the town was inhabited by about 350 people between 4700 and 4200 BC. – about 1500 years before the Greek civilization.
The residents boiled water from a local spring and used it to create salt bricks, which were traded and used to preserve meat.
INNOVIMENTOR (Balkan-Mediterranean)
