
A 21st Century Odyssey
John Underhill discussed the geoscientific basis for and implications of relocating Odysseus' homeland, Ancient Ithaca in his keynote speech at the 87th EAGE annual Conference & Exhibition on Wednesday 10 June.
"Now Ithaca lies low, furthest up in the sea-towards the dusk, but the other islands lie away towards the dawn and the sun..."
Homer's epic poems The Iliad and The Odyssey describe Odysseus’ 20-year journey to, and return from, the Trojan War around 3000 years ago. They include descriptions of a number of Bronze Age (Mycenaean) sites, the locations of which have long been sought by archaeologists and classical Greek Scholars.

Given that Ithaca was thought to be an island, we deployed an array of geoscientific methods in the Thinia Valley, a narrow (6km x 2km) land bridge connecting Paliki with the rest of Kefalonia, in order to test whether a throughgoing marine channel existed in the Bronze Age which would have rendered today's single island into two distinct bodies.

As the data and evidence emerged, it became evident that the marine channel theory did not hold water. Instead, another explanation presented itself, involving an overland watercourse comprising northward- and southward-flowing rivers occupying incised valleys formed during the last glacial maximum.
The results are consistent with Strabo’s description of the valley in Roman times, which mentions that at times water stretched from end to end, and would resolve the long-standing Classical mystery surrounding the location of Odysseus’ homeland, with consequent implications for Greek Scholarship and future archaeological investigations.
“The marine channel hypothesis does not hold up under scrutiny,” explains Professor John Underhill, who has led the geoscientific research since its inception. “What we see instead is a landscape carved not by a Bronze Age seaway but by rivers, most likely filling valleys carved during the last Ice Age. This resolves a key geological question while still supporting the geographic description of Paliki as the most plausible setting for Homer’s Ithaca.”

Homer is the legendary ancient Greek poet credited with writing the Iliad and the Odyssey, two of the most foundational works in Western literature. He is believed to have lived sometime around the 8th century BCE, likely in Ionia (modern-day Turkey).

Odysseus was the legendary king of Ithaca whose cunning - most famously demonstrated by his invention of the Trojan Horse - won the Trojan War for the Greeks. Following the war, he spent ten gruelling years battling monsters, curses, and angry gods to survive and reclaim his family and kingdom.

Possibly in ancient times the name referred to a kingdom comprising multiple islands, or perhaps the name migrated as land masses changed and populations moved, or changed and was then later adopted nearby. What is certain is that modern Paliki, the western portion of Kefalonia, fits Homer's geographical description while modern Ithaca does not.