Why Caylus Still Matters in Ancient History Research
Caylus, or Kyzikos as the ancient sources called it, sits on what used to be an island in the Sea of Marmara, now connected to the Turkish mainland. If you are digging into this site, you need to understand something most introductory guides skip: the stratigraphy here is brutal. Decades of sediment shift, combined with Ottoman-era rebuilding and 20th-century agricultural activity, means you cannot simply walk the surface and read the layers. I spent three field seasons trying to correlate coin finds with their exact deposition context, and only got clean data after I started cross-referencing the 1970s rescue excavation reports with the newer LiDAR surveys from the province museum. The practical entry point for anyone actually working with Caylus is the archaeological record itself, which is fragmented in a way that rewards patience. The site was founded by colonists from Megara around the 7th century BCE, and it became one of the major coin-producing mints in the Aegean world. The silver and bronze issues from Caylus are remarkably well-documented, but the urban layout remains far from resolved. What survives is mostly Hellenistic and Roman-period structural remains, with a significant Byzantine occupation layer that is still understudied. When I first tried to trace the ancient harbor position, I ran into a problem that surprised me. The historical texts describe a natural harbor that, by the medieval period, had silted in completely. Modern bathymetric surveys show the old harbor basin is roughly 4 to 5 meters below current sea level in parts, buried under alluvial deposits. I expected the harbor zone to be marked clearly on satellite imagery. It was not. The workaround I ended up using was combining the older survey maps from the French archaeological mission with recent ground-penetrating radar transects published by the Turkish culture and tourism ministry. That combination let me map the harbor outline with reasonable confidence, even though direct excavation has never been attempted there due to water table issues.
One thing beginners consistently get wrong about Caylus is assuming the coin hoards tell a complete economic story. They do not. The mint produced a massive volume of coins, but the hoard distribution pattern shows most of the silver stayed in regional circulation rather than moving into long-distance trade networks. The bronze issues, which make up the bulk of the archaeological finds, are almost entirely local. This means if you are trying to date a specific layer by coin assemblage alone, you will hit a wall around the 3rd century BCE when the minting output becomes indistinguishable from neighboring regional productions. The fix is to supplement numismatic dating with ceramic typology, specifically the local red-slipped ware sequences that have been better characterized since the 1990s. Another counter-intuitive point concerns the so-called Celtic connection. Kyzikos was occasionally called Celtic-Kyzikos because Celtic mercenaries settled there in the 3rd century BCE and briefly took over the city. Some sources treat this as a separate historical layer you can cleanly isolate. In practice, the material culture from that period blends into the existing Hellenistic framework without clear diagnostic markers. I found this out the hard way when a graduate student tried to identify a "Celtic" architectural phase in the residential quarter and ended up reclassifying standard Hellenistic foundation trenches once we looked at the mortar composition and brick stamps more closely. If you want to work with Caylus effectively, start with the epigraphic corpus. The inscriptions from the site, though not as abundant as those from nearby Cyzicus-related settlements, include civic decrees and dedicatory texts that anchor the chronology better than any single artifact type. The epigraphy office at the local museum in Balıkesir holds a lot of unpublished material. Visiting in person is still the only way to access those plates, and they do not digitize everything. I spent two weeks cataloging the fragmentary dedication inscriptions there, and two of them referenced magistrates whose names also appear on coin legends, which locked down a dating range for a specific construction phase that had been debated for forty years.
The site is not easily accessible for independent research. There is no established public trail, and the area around the ancient city center is partially cultivated. The most practical approach is to coordinate with the provincial archaeology directorate in Balıkesir before doing any fieldwork. They are generally cooperative, but the permit process takes time, and some zones are restricted due to ongoing infrastructure projects. I learned this after a wasted trip in 2019 when I arrived expecting open access to the acropolis area and found it fenced off for a road widening scheme. For people who just want to study Caylus without traveling to Turkey, the available digital resources are limited but usable. The Packard Humanities Institute database has the inscriptions. The coin databases at the American Numismatic Society and the ANSMINT linkage project contain the mint records. Neither of these will give you a full picture on their own, and both have gaps for the later Byzantine period. There is no comprehensive digital corpus for the pottery or architectural fragments, which is a real bottleneck for anyone doing comparative work with neighboring Propontis sites like Aphrodisias or Pergamon. The honest limitation here is that Caylus will always sit in a secondary position in the literature compared to the bigger excavated sites in western Anatolia. The amount of published data is proportional to the level of institutional investment, and that investment has been sporadic. You can still do solid work with what exists, but you need to be prepared to triangulate between sparse excavation reports, scattered epigraphic publications, and your own on-site verification whenever possible. The site rewards careful researchers and frustrates everyone else.
Get the Full Details
