Ortona Indian Mounds
Ortona Prehistoric Village · Ortona Village Complex
Late Woodland – Glades I–II (300 BCE–1150 CE)·Glades / Calusa tradition (Okeechobee Basin)·🇺🇸 Florida, Glades County, United States
About
About Ortona Indian Mounds
Late Woodland–Glades/Calusa affiliated town (300 BCE–1150 CE, peak 550–850) spread 5 sq mi along Caloosahatchee River north bank: 3 sand mounds (Mound A Plaza 3.5 m, Mound B and borrow mound), 2 linear embankments, borrow borrow canals and 4 canoe canals 10 m wide × 1 m deep totaling 2.3 km linking river to interior sloughs, and raised earthen causeways through sawgrass. Large linear midden and village reflects early canal-digging agriculture-margin experiment; John Griffin/Milanich surveys showed charcoal dates 300 BCE. Listed as Florida Park; largest inland canal system in peninsular Florida pre-dating Calusa Pineland.
Why it mattersEarliest documented canal network in Florida interior; demonstrates wetland engineering by non-Mississippian societies; predecessor to Calusa hydraulics.
Open questions
Mysteries & theories
Mysteries
- 01Labor needed for 2.3 km canoe canals
- 02Relationship of Ortona to Lake Okeechobee Belle Glade earthworks
Theories
- 01Wetland management for fish transport and flood control
- 02Ceremonial causeways separating sacred vs domestic space
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.550–850 CE canal-mound complex
- Period
- Late Woodland – Glades I–II (300 BCE–1150 CE)
- Culture
- Glades / Calusa tradition (Okeechobee Basin)
- Purpose
- Riverine canoe district center with canal transport and ceremonial mounds
- Excavation
- Partially excavated
c.550–850 CE canal-mound complex
Initial construction
c. 1517 CE
Abandonment
On the ground
Structures & features
26.8169° N · 81.3131° W · 8 m · 2 mapped features
Mound A plaza
pyramid40×30 m platform 3.5 m high with plaza and surrounding ditch
26.8172° N · 81.3128° WMain east-west canoe canal
canal1200 m long 10 m wide canal linking Caloosahatchee to interior marsh
26.8165° N · 81.3105° W
Gallery