Kianida / Cyanida Shoal (phantom island)
A structure at Apollonia Pontica (Sozopol) – Submerged Necropolis & Anchorage · 🇧🇬 Bulgaria
The structure
About Kianida / Cyanida Shoal (phantom island)
Sunken Holocene island 15 km SE mapped from Ptolemy and bathymetry (~13 m depth)