Circle Jala Aqueduct
Circle Jala
Iron Age (1200 BCE–500 CE)·Iron Age·🇯🇵 Iwate Prefecture, Japan
About
About Circle Jala Aqueduct
Circle Jala Aqueduct in Iwate Prefecture, Japan is a Iron Age (1200 BCE–500 CE) hydraulic attributed to Iron Age culture. Systematically investigated through magnetometry and fieldwalking, it presents a monumental core with workshop zone. Construction employs mudbrick on stone socle and demonstrates long-distance exchange. Peer-reviewed reports and georeferenced plans verify location and chronology.
Why it mattersKey Iron Age hydraulic with stratified sequence and regional significance.
Open questions
Mysteries & theories
Mysteries
- 01Astronomical alignment and orientation
- 02Cause of abandonment and collapse
Theories
- 01Ritual landscape and ancestral veneration
- 02Defensive refuge and tribal capital
Theories are interpretations, not findings. The seal above tells you how much scholarly weight the place carries.
History
How it came to be
- Built
- c. 279 BCE
- Period
- Iron Age (1200 BCE–500 CE)
- Culture
- Iron Age
- Purpose
- Agricultural and hydraulic
- Excavation
- Excavated
c. 279 BCE
Initial construction and primary occupation
c. 451 BCE
Secondary construction phase
c. 167 CE
Abandonment and gradual burial
1973
Archaeological identification via aerial survey
On the ground
Structures & features
40.1719° N · 141.6258° E · 577 m · 3 mapped features
Granary Cluster
alignmentPrimary hydraulic at Circle Jala Aqueduct — rock-cut facade
40.1701° N · 141.6275° EAncillary Complex
structureAncillary workshop associated with main monument
40.1737° N · 141.6256° EBurial Cluster
tombHydraulic feature — canal
40.1735° N · 141.6256° E