Hephaistia was an ancient city dedicated to the god Hephaestus.
It was the second most important town of the island after Myrina.
The findings in the area include houses, cemetery, sprawling sanctuary dedicated to the great goddess Lemnos, pottery workshop, port and theater.
The renovated theater during the summer months hosts performances and concerts under the stars and moon-light.
Excavations:
In August and September 1926, members of the Italian School of Archaeology at Athens conducted trial excavations on the island. The overall purpose of the excavations was to shed light on the island's "Etrusco-Pelasgian" civilization. The excavations were conducted on the site of the city of Hephaistia (i.e. Palaiopolis) where the Pelasgians, according to Herodotus, surrendered to Miltiades of Athens.
There, a necropolis (c. 9th–8th centuries BC) was discovered, revealing bronze objects, pots, and over 130 ossuaries. The ossuaries contained distinctly male and female funeral ornaments. Male ossuaries contained knives and axes whereas female ossuaries contained earrings, bronze pins, necklaces, gold-diadems, and bracelets. The decorations on some of the gold objects contained spirals of Mycenaean origin, but had no Geometric forms. According to their ornamentation, the pots discovered at the site were from the Geometric period.
However, the pots also preserved spirals indicative of Mycenaean art. The results of the excavations indicate that the Early Iron Age inhabitants of Lemnos could be a remnant of a Mycenaean population and, in addition, the earliest attested refer to Lemnos is the Mycenaean Greek ra-mi-ni-ja, "Lemnian woman", written in Linear B syllabic script.
Source: wikipedia.org