Geography of Varna Province

Solnitsata (, "The Saltworks") was a prehistoric town located in present-day Bulgaria, near the modern city of Provadia. It is the oldest salt production center in continental Europe (5500‑4200 BC). It was the first prehistoric urban center in Europe. Solnitsata was a fortified stone settlement - citadelle, inner and outer city with pottery production site and the site of a salt production facility; it flourished c. 4700–4200 BC. The settlement was walled to protect the salt, a crucial commodity in antiquity. Although its population has been estimated at only 350, argues that it meets establis

thumb|300px|Marcianopolis city model (Devnya museum) and showing the location of the House of Antiope in the centre

nature reserve in Bulgaria

nature park in Varna Province, Bulgaria