Landmark· Giali (Gyali)· Greece — Dodecanese, Sporades & North Aegean

Giali Obsidian & Pumice Island

36° 39.6′ N · 27° 7.4′ E

Giali means 'glass': its north-east half is almost entirely black obsidian lava domes and its south-west half pumice, joined by a narrow isthmus. People lived here in the Neolithic, working obsidian and some of the earliest copper in the Aegean.

Practical

The pumice is mined in huge quantities and, with perlite, supplies much of the municipality's income (Wikipedia; Greek Wikipedia). Settled seasonally from the early 4th millennium BC; crucibles with copper are rare evidence of the earliest Aegean metalworking (Wikipedia). The quarry and loading piers dominate the south-east side; keep away from quarry operations and heed warning signs ashore (Sailing Issues).

Best for

Geology and Neolithic history from the anchorage