Near the modern resort town of Byala, on Cape St. Atanas on the ruins of the late antique fortress, which is still ongoing archaeological excavation. For the first time researchers have shown interest in this area in the late 19th century.

Scientists say that the ancient settlement was founded in the area in the 6th century BC, later a fortress was built – Hellenic colony, called Aspro, which means White city. This name the fortress owes white limestone cliffs with quaint, rugged form. Has survived the ruins of the ancient fortress walls that surrounded and protected the settlement.

Here were found fragments of ancient ship anchors, which were made of wood and stone. Along with other artifacts found in excavations, they are available for viewing at the exhibition centre "White cliffs" ("Biliti Scully").

In the course of excavations by archaeologists from Varna here was found a unique artifact – the ring of gold, Dating from the 6th century B. C. It is decorated with a miniature exact replica of the rotunda, which is in Jerusalem. Such a ring is mentioned only once in the literature, it is believed that such ornaments were all made in the workshops of the Emperor in Constantinople. Probably the ring with the rotunda was donated by the Patriarch of Constantinople to the local Bishop. Found the decoration of the house was in ruins, consisting of two floors, in which, allegedly, Bishop and lived.

Excavations on Cape St. Atanas financially supported by the European Fund and the government of Bulgaria. To work on archaeological excavations, as well as enhance the attractiveness of this area for lovers of historical tourism has been allocated over two and a half million euros. It is also planned to develop the infrastructure and landscaping of the area.