06 · Hwasun · precision before writing

Geometry in very fine lines

The fine-line mirror of Daegok-ri

The reverse of the mirror bears lines and triangles so fine that its manufacture required a mould of great precision.

Museum documentation · free public access, no account required.

Specific historical reconstruction of The fine-line mirror of Daegok-ri, Daegok-ri, Hwasun, South Jeolla, 3rd–2nd centuries BCE — **DECLARED VISUAL RECONSTRUCTION · AI-GENERATED IMAGE · TRACEKEEPERS**
Generated reconstruction · Declared visual hypothesis
Declared visual reconstruction; not a photograph of the original nor documentary evidence.

**DECLARED VISUAL RECONSTRUCTION · AI-GENERATED IMAGE · TRACEKEEPERS**
Generated reconstruction · Declared visual hypothesis
Declared visual reconstruction; not a photograph of the original nor documentary evidence.

History and context

The Daegok-ri mirrors cover the reverse with extremely fine triangles and lines, organised around two handles. Their manufacture required a precise mould and control of a tin-rich alloy, brighter but also harder to work.

They may have reflected the sun in ceremonies as well as showing the face. That ritual function is reasonable from their composition and context, but was not observed directly; the piece demonstrates a craft science that did not need to leave a written manual.

The two Daegok-ri mirrors measure 18 and 14.6 centimetres in diameter. On the reverse, two knobs interrupt a pattern of triangles and lines so fine that the manufacture of the mould remains a subject of conservation research.

More tin increases brightness and sonority, but makes the bronze brittle and difficult to cast. The possible solar reflection in rituals connects optical property and authority, without our knowing ceremonial words, date or the exact position of the officiant.

Evidence and interpretation

Documented fact: The National Museum of Korea documents dimensions, Daegok-ri tomb, double handle and technical complexity of these mirrors. Interpretation and caution: use for reflecting sunlight in ceremonies is proposed from properties and context, not from contemporary text. Expanded documented fact: The National Museum of Korea documents dimensions, pattern, alloy and context of a wooden coffin with stone mound. Expanded interpretation and caution: The solar function and the 'theocracy' are reasoned museum interpretations, not contemporary textual descriptions.

Catalogue facts

Narrative date: 3rd–2nd centuries BCE
Location: Daegok-ri, Hwasun, South Jeolla
Material: Cast copper-tin bronze
Context: Individual tomb with rich bronze assemblage
Curatorial reading: The documented fact and its interpretation appear separately in the evidence block.
Diameters: The two mirrors measure 18 cm and 14.6 cm.
Handles: Each reverse bears two knobs surrounded by linear geometry.
Complex: They form part of eleven bronzes originally found in Daegok-ri, expanded by two daggers recovered in a later excavation.
Documentary coverage: 2 museum, heritage, primary corpus or research sources for this stop.

A SHARED TOPIC, DIFFERENT MOMENTS

Objects connected through time

Follow a topic across the collections. A shared tag is a way to compare objects, not proof that one culture influenced another.

The order uses the midpoint of each approximate date range; ranges can overlap. Spacing does not represent elapsed time. Swipe, scroll or use the arrows. With the sequence focused, use ← / →, Home or End.

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3rd–2nd centuries BCE

Geometry in very fine lines

Gojoseon and early Korea

Approximate dating according to the record.

Current record

Bronze23 dated objects

16 / 23In the centre: Geometry in very fine lines

Also connected, without a comparable date (6)

These objects are not placed after the others: an unknown date does not mean a more recent object.

Daegok-ri grave goodsGojoseon and early Korea · from c. 5th century BCE
Early metallurgyAncient China · c. 1900–1500 BCE
Four offerersIberians · Iberian period · individual dating according to catalogue
Iron changes the frontierGojoseon and early Korea · 3rd–2nd centuries BCE
The workshop inside the ditchYayoi Japan · 4th century BCE–3rd century CE, peak in Middle and Late Yayoi
Weapons under the LakeCeltic worlds · Mainly 3rd–1st centuries BCE

You can scroll the first group without JavaScript. The other topics are also available below.

Mirrors

Geometry in very fine lines · 3rd–2nd centuries BCE · Gojoseon and early Korea — You are viewing

Without a comparable date (not part of the chronological order):

Daegok-ri grave goods · from c. 5th century BCE · Gojoseon and early Korea

Casting

Akkadian sovereign head · Akkadian period · 23rd century BCE · Sumer
Bassetki Statue · Akkadian period · 23rd century BCE · Sumer
Jue · c. sixteenth century BCE · Ancient China
Bull-leaping · c. 1600–1450 BCE · Greek worlds
Liding · 12th–11th centuries BCE · Ancient China
Talayotic sword · ≈1200–1000 BCE · destruction of the talayot towards 790 BCE · Iberians
The lute-shaped dagger · Towards 1000–400 BCE · Gojoseon and early Korea
The great Greek krater of Vix · ≈530–500 BCE · Greek worlds
Scorțaru cauldron · 6th–5th centuries BCE · Thracians
A battle on a comb · Early 4th century BCE · Scythians and Saka
The blade became straight · 5th–1st centuries BCE · Gojoseon and early Korea
Geometry in very fine lines · 3rd–2nd centuries BCE · Gojoseon and early Korea — You are viewing
Eight voices in one hand · 3rd–2nd centuries BCE · Gojoseon and early Korea
Fibula from Lancia · ≈300–100 BCE · Iberians
Horse fibula · 2nd century BCE · disputed chronology · Iberians
A sky over the liver · End of the second–beginning of the first century BCE · Etruscans and Rome
Thirty-nine buried bells · Buried towards the 1st century BCE–1st century CE · Yayoi Japan
Kongo crucifix · 16th–17th centuries · Bantu-speaking worlds

Without a comparable date (not part of the chronological order):

Early metallurgy · c. 1900–1500 BCE · Ancient China
Four offerers · Iberian period · individual dating according to catalogue · Iberians
Piece-mold casting · c. 1600–1046 BCE · Ancient China

Geometric motifs

Without a comparable date (not part of the chronological order):

Engraved stone · Before ≈39,000 cal BP · Prehistory
Ishango, without genealogical shortcut · More than 20,000 years; context ca. 25,000–20,000 BP · Batwa / Twa histories

Funerary contexts

Brno II Articulated Figure · ≈28,000 years cal BP · by funerary association · Prehistory
'Jamila's' necklace · ≈7250–7000 BCE · Prehistory
The Gold of Varna · Towards 4600–4200 BCE · Thracians
El Miradero spatula-idols · ≈4000–3800 cal BCE · Prehistory
Guadancil idol-plaque · 3750–2500 cal BCE · Iberians
Staff of Anta 4 · Late 4th–first half of the 3rd millennium BCE. · Prehistory
Abydos Boats · ca. 3000 BCE · Ancient Egypt
Queen's Lyre · ca. 2600–2500 BCE · Sumer
Puabi headdress · ca. 2600–2450 BCE · Sumer
Standard of Ur · ca. 2600–2400 BCE · Sumer
Cemetery R-37 · ca. 2550–2030 BCE · Indus civilisation
Kerma vessel · c. 1802–1640 BCE · Nubia, Kerma and Kush
Grave Circle A and Chrysolakkos · 18th–16th centuries BCE · Greek worlds
Burial at K IV · circa 1750–1550 BCE · Nubia, Kerma and Kush
Before Vedic India · c. 1900–1300 BCE · Vedic and later Indian worlds
Osmankayası and Ilıca · ca. 1700/1650–1200 BCE · Hittites
Tutankhamun's grave goods · death towards 1323 BCE · Ancient Egypt
Fu Hao’s burial goods · ca. 1200 BCE · Ancient China
The voice of Ahiram · c. 11th–10th century BCE · Phoenicians
Before Etruscans and Rome · ca. 850–800 BCE · Etruscans and Rome
The urn under the helmet · 9th–8th centuries BCE · Etruscans and Rome
Tomb 1 at Kuntur Wasi · c. 800 BCE · Pre-Inca cultures
Beads from Cerro de los Vientos · 8th–7th centuries BCE · orientalizing · Iberians
Ceramic stand 1010 · 8th–7th centuries BCE · orientalizing · Iberians
Regolini-Galassi tomb · ca. 675–650 BCE · Etruscans and Rome
Shabti of Psamtek · 570–526 BCE · Ancient Egypt
Two voices in an urn · 530–520 BCE · Etruscans and Rome
The great Greek krater of Vix · ≈530–500 BCE · Greek worlds
Steppe kurgans · 7th–4th centuries BCE · Scythians and Saka
Vix Tomb · c. 500 BCE · Celtic worlds
La Venta grave goods · ca. 600–400 BCE · Maya worlds
Sarcophagus of Eshmunazar · first quarter of the 5th century BCE · Phoenicians
Banquet under leopards · Around 480–470 BCE · Etruscans and Rome
Twenty-six voiceless signs · 5th–4th centuries BCE · Scythians and Saka
The oldest knotted carpet · 5th–4th centuries BCE · Scythians and Saka
The statue was the urn · First half of the 4th century BCE · Iberians
Grave goods of Baza and Toya · First half of the 4th century BCE · Iberians
The Attic krater that took on a new life in Cástulo · 4th century BCE · Greek worlds
The silver amphora of Chertomlyk · 4th century BCE · Greek worlds
The Kul-Oba vase · 4th century BCE · Greek worlds
Susa grave goods · c. 350 BCE · Achaemenid Persia
Faces of the Steppe · Second half of the 4th century BCE · Scythians and Saka
Lady of Ibiza · 4th–3rd centuries BCE · Phoenicians
453 astragali from Alarcos · 4th–3rd centuries BCE · necropolis chronology · Iberians
Lady of Ibiza · 4th–3rd centuries BCE · Iberians
Falcata from Almedinilla · 4th–3rd centuries BCE · Iberians
Golyamata Kosmatka · End of the 4th century – beginning of the 3rd century BCE; ritual burial at the beginning of the III according to Iskra. · Thracians
The blade became straight · 5th–1st centuries BCE · Gojoseon and early Korea
Geometry in very fine lines · 3rd–2nd centuries BCE · Gojoseon and early Korea — You are viewing
Northern mound · 2nd–1st centuries BCE · Yayoi Japan
Two rows of coffins · Mainly Middle Yayoi, 2nd century BCE–1st century CE · Yayoi Japan
Kabusanza, ca. 400 · ca. 400 CE · Batwa / Twa histories
Pakal’s grave goods · sealed on 28 August 683 CE · Maya worlds
Missing grave goods · 13th–15th centuries according to the heritage overview · Bantu-speaking worlds

Without a comparable date (not part of the chronological order):

A Kerma vessel deposited at Abydos · Second Intermediate Period · Ancient Egypt
A vase travels; the rite changes · No individual dating published on this record · Iberians
Cemetery · ca. 2600–1900 BCE · Indus civilisation
Daegok-ri grave goods · from c. 5th century BCE · Gojoseon and early Korea
Four panoplies · No individual dating published on this record · Iberians
Livestock and mounds · c. 2050–1500 BCE · Nubia, Kerma and Kush
Shum Laka · c. 8,000 and 3,000 years before present · Bantu-speaking worlds
The quarry remained visible · Mainly 6th–5th centuries BCE · Gojoseon and early Korea
Three hundred lives in the sand · Mainly 4th century BCE–3rd century CE · Yayoi Japan
Urns from Adichanallur · Iron Age · samples towards 665 and 467 BCE · Vedic and later Indian worlds

A closer look

About 1 min to read · 1 section. Further reading and sources · free access. Editorial review recorded: September 5, 2026.

A sand mould for tiny lines

The National Museum of Korea notes that no ancient moulds for these fine-line mirrors have yet been excavated. However, the conservation of another example, National Treasure 141 of Soongsil University, provided indications of manufacture using fine sand, in contrast to known stone moulds for other bronzes. In Daegok-ri, the triangles contain approximately two or three lines per millimetre. The comparison brings the problem to the craft work: preparing a surface capable of receiving and preserving that relief was as decisive as obtaining the alloy and controlling the pour.

Museum · Lee Jinmin, National Museum of Korea · Assemblage of Artifacts from the Daegok-ri Site, HwasunAccess recorded: September 5, 2026.

Location and territory

LOCATED SITE

Daegok-ri/Hwasun · KoreaMegalithic landscape marker.

Where it is held

National Museum of Korea

Item or group in the record · Documented collection

The holding institution is documented; public display may change. Check its official record before visiting.

Sources and references

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Geometry in very fine lines

History and context

Evidence and interpretation

Catalogue facts

Objects connected through time

Geometry in very fine lines

Jue

Bull-leaping

Fu Hao’s burial goods

Liding

Talayotic sword

Tribute to Assyria

Before Etruscans and Rome

The lute-shaped dagger

Kushite king

The great Greek krater of Vix

Scorțaru cauldron

Vix Tomb

Yan knife-money in the Gojoseon sphere

A coin with the memory of a blade

The blade became straight

Geometry in very fine lines

Eight voices in one hand

The Shield that Did Not Fight

Fibula from Lancia

A sky over the liver

Hand of Irulegui

Thirty-nine buried bells

Torreáguila fountain spout

A closer look

A sand mould for tiny lines

Location and territory

Where it is held

National Museum of Korea

Sources and references

Did you enjoy this exhibit?