A Previously Unknown Building Structure in Ancient Olympia (Western Peloponnese, Greece) Revealed by Geoarchaeological Investigations and Its Interpretation as a Possible Harbor

The ancient site of Olympia is located on the northern fringe of the Basin of Makrisia at the confluence of the Kladeos and Alpheios rivers (western Peloponnese, Greece) and was used as a venue for the Panhellenic Games from Archaic times until the 4th century AD. Geophysical prospection (frequency...

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Main Authors: Lena Slabon, Sarah Bäumler, Elena Appel, Sabine Fiedler, Peter Fischer, Lea Obrocki, Georg Pantelidis, Sascha Scherer, Benedict Thein, Timo Willershäuser, Birgitta Eder, Hans-Joachim Gehrke, Franziska Lang, Erofili-Iris Kolia, Oliver Pilz, Dennis Wilken, Andreas Vött
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Language:English
Published: MDPI AG 2025-01-01
Series:Heritage
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Online Access:https://www.mdpi.com/2571-9408/8/2/38
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author Lena Slabon
Sarah Bäumler
Elena Appel
Sabine Fiedler
Peter Fischer
Lea Obrocki
Georg Pantelidis
Sascha Scherer
Benedict Thein
Timo Willershäuser
Birgitta Eder
Hans-Joachim Gehrke
Franziska Lang
Erofili-Iris Kolia
Oliver Pilz
Dennis Wilken
Andreas Vött
author_facet Lena Slabon
Sarah Bäumler
Elena Appel
Sabine Fiedler
Peter Fischer
Lea Obrocki
Georg Pantelidis
Sascha Scherer
Benedict Thein
Timo Willershäuser
Birgitta Eder
Hans-Joachim Gehrke
Franziska Lang
Erofili-Iris Kolia
Oliver Pilz
Dennis Wilken
Andreas Vött
author_sort Lena Slabon
collection DOAJ
description The ancient site of Olympia is located on the northern fringe of the Basin of Makrisia at the confluence of the Kladeos and Alpheios rivers (western Peloponnese, Greece) and was used as a venue for the Panhellenic Games from Archaic times until the 4th century AD. Geophysical prospection (frequency domain electromagnetic induction and electrical resistivity tomography) was carried out as a basis for detailed geoarchaeological investigations. In doing so, we identified a previously unknown building structure adjacent to the Altis, the inner part of the sanctuary at Olympia. Situated south of the Southwest Thermae, this structure measures at least 100 m (WSW-ENE) by 80 m (NNW-SSE). Its external orientation is in line with the orientation of the Southwest Thermae and the Leonidaion. We retrieved sediment cores from 17 different locations in combination with high-resolution direct push sensing from inside the newly found structure. All cores revealed distinct units of organic-rich limnic sediments dominated by clay and fine silt. Geochemical and micropaleontological analyses of selected sediment samples indicate highly eutrophic conditions, as evidenced by elevated phosphorous concentrations and the dominance of the ostracod species <i>Cyprideis torosa</i>, which is able to live under low-oxygen conditions. Moreover, molecular biomarker analyses show a significant input of lipid fecal markers, implying strong anthropogenic pollution. Further, the limnic sediments include numerous charcoal remains and abundant diagnostic artifacts such as ceramic fragments and building material. Radiocarbon dating documents that these limnic conditions persisted within the building structure from at least the 5th century BC to the 6th century AD. The identified building structure lies in the immediate proximity to the Lake of Olympia, which was recently found to have existed from the mid-Holocene to the Medieval period. Its characteristic filling with fine-grained sediments and multiple indications for a strongly polluted and heavily used standing water environment let us hypothesize that it was possibly used as a harbor installation. A harbor at ancient Olympia could have been used to reach the sanctuary by boat and to transport goods of all kinds.
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spelling doaj-art-42acd43595534eca8d433d16597cc6532025-08-20T03:12:00ZengMDPI AGHeritage2571-94082025-01-01823810.3390/heritage8020038A Previously Unknown Building Structure in Ancient Olympia (Western Peloponnese, Greece) Revealed by Geoarchaeological Investigations and Its Interpretation as a Possible HarborLena Slabon0Sarah Bäumler1Elena Appel2Sabine Fiedler3Peter Fischer4Lea Obrocki5Georg Pantelidis6Sascha Scherer7Benedict Thein8Timo Willershäuser9Birgitta Eder10Hans-Joachim Gehrke11Franziska Lang12Erofili-Iris Kolia13Oliver Pilz14Dennis Wilken15Andreas Vött16Institute of Geography, Johannes Gutenberg-Universität Mainz, 55122 Mainz, GermanyInstitute of Geosciences, Kiel University, 24118 Kiel, GermanyInstitute of Geography, Johannes Gutenberg-Universität Mainz, 55122 Mainz, GermanyInstitute of Geography, Johannes Gutenberg-Universität Mainz, 55122 Mainz, GermanyInstitute of Geography, Johannes Gutenberg-Universität Mainz, 55122 Mainz, GermanyInstitute of Geography, Johannes Gutenberg-Universität Mainz, 55122 Mainz, GermanyDepartment of Classical Archaeology, Technische Universität Darmstadt, 64289 Darmstadt, GermanyInstitute of Geography, Johannes Gutenberg-Universität Mainz, 55122 Mainz, GermanyInstitute of Geography, Johannes Gutenberg-Universität Mainz, 55122 Mainz, GermanyInstitute of Geography, Johannes Gutenberg-Universität Mainz, 55122 Mainz, GermanyAustrian Academy of Sciences, Austrian Archaeological Institute, 10683 Athens, GreeceSeminar of Ancient History, Universität Freiburg, 79098 Freiburg, GermanyDepartment of Classical Archaeology, Technische Universität Darmstadt, 64289 Darmstadt, GermanyEphorate of Prehistoric and Classical Antiquities of Ilia, 27065 Ancient Olympia, GreeceAthens Department, German Archaeological Institute, 10678 Athens, GreeceInstitute of Geosciences, Kiel University, 24118 Kiel, GermanyInstitute of Geography, Johannes Gutenberg-Universität Mainz, 55122 Mainz, GermanyThe ancient site of Olympia is located on the northern fringe of the Basin of Makrisia at the confluence of the Kladeos and Alpheios rivers (western Peloponnese, Greece) and was used as a venue for the Panhellenic Games from Archaic times until the 4th century AD. Geophysical prospection (frequency domain electromagnetic induction and electrical resistivity tomography) was carried out as a basis for detailed geoarchaeological investigations. In doing so, we identified a previously unknown building structure adjacent to the Altis, the inner part of the sanctuary at Olympia. Situated south of the Southwest Thermae, this structure measures at least 100 m (WSW-ENE) by 80 m (NNW-SSE). Its external orientation is in line with the orientation of the Southwest Thermae and the Leonidaion. We retrieved sediment cores from 17 different locations in combination with high-resolution direct push sensing from inside the newly found structure. All cores revealed distinct units of organic-rich limnic sediments dominated by clay and fine silt. Geochemical and micropaleontological analyses of selected sediment samples indicate highly eutrophic conditions, as evidenced by elevated phosphorous concentrations and the dominance of the ostracod species <i>Cyprideis torosa</i>, which is able to live under low-oxygen conditions. Moreover, molecular biomarker analyses show a significant input of lipid fecal markers, implying strong anthropogenic pollution. Further, the limnic sediments include numerous charcoal remains and abundant diagnostic artifacts such as ceramic fragments and building material. Radiocarbon dating documents that these limnic conditions persisted within the building structure from at least the 5th century BC to the 6th century AD. The identified building structure lies in the immediate proximity to the Lake of Olympia, which was recently found to have existed from the mid-Holocene to the Medieval period. Its characteristic filling with fine-grained sediments and multiple indications for a strongly polluted and heavily used standing water environment let us hypothesize that it was possibly used as a harbor installation. A harbor at ancient Olympia could have been used to reach the sanctuary by boat and to transport goods of all kinds.https://www.mdpi.com/2571-9408/8/2/38ancient Olympiageoarchaeologysediment coringdirect push sensinggeochemical analysesmicropalaeontology
spellingShingle Lena Slabon
Sarah Bäumler
Elena Appel
Sabine Fiedler
Peter Fischer
Lea Obrocki
Georg Pantelidis
Sascha Scherer
Benedict Thein
Timo Willershäuser
Birgitta Eder
Hans-Joachim Gehrke
Franziska Lang
Erofili-Iris Kolia
Oliver Pilz
Dennis Wilken
Andreas Vött
A Previously Unknown Building Structure in Ancient Olympia (Western Peloponnese, Greece) Revealed by Geoarchaeological Investigations and Its Interpretation as a Possible Harbor
Heritage
ancient Olympia
geoarchaeology
sediment coring
direct push sensing
geochemical analyses
micropalaeontology
title A Previously Unknown Building Structure in Ancient Olympia (Western Peloponnese, Greece) Revealed by Geoarchaeological Investigations and Its Interpretation as a Possible Harbor
title_full A Previously Unknown Building Structure in Ancient Olympia (Western Peloponnese, Greece) Revealed by Geoarchaeological Investigations and Its Interpretation as a Possible Harbor
title_fullStr A Previously Unknown Building Structure in Ancient Olympia (Western Peloponnese, Greece) Revealed by Geoarchaeological Investigations and Its Interpretation as a Possible Harbor
title_full_unstemmed A Previously Unknown Building Structure in Ancient Olympia (Western Peloponnese, Greece) Revealed by Geoarchaeological Investigations and Its Interpretation as a Possible Harbor
title_short A Previously Unknown Building Structure in Ancient Olympia (Western Peloponnese, Greece) Revealed by Geoarchaeological Investigations and Its Interpretation as a Possible Harbor
title_sort previously unknown building structure in ancient olympia western peloponnese greece revealed by geoarchaeological investigations and its interpretation as a possible harbor
topic ancient Olympia
geoarchaeology
sediment coring
direct push sensing
geochemical analyses
micropalaeontology
url https://www.mdpi.com/2571-9408/8/2/38
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