Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Monumental Earthworks of Poverty Point' has mentioned 'Plaza' in the following places:
Occurrence Sentence Text Source
Contents 1 Site description 1.1 Six C-shaped ridges 1.2 Plaza 1.3 Mound A 1.4 Mound B 1.5 Mound C 1.6 Mound D 1.7 Mound E 1.8 Mound F 1.9 Lower Jackson and Motley mounds 2 History 2.1 Construction 2.2 Purposes 2.3 Poverty Point people 2.3.1 Artifacts 3 Discovery, excavation and tourism 3.1 Discovery and archaeological excavation 3.2 Public access and site maintenance 3.3 UNESCO World Heritage Site designation 4 See also 5 References 6 External links
The Monumental Earthworks of Poverty Point consist of a series of earthen ridges, earthen mounds, and a central plaza.
Plaza[edit]
Enclosed by the innermost concentric ridge and the eastern edge of Macon Ridge is a large, 37.5-acre (17.4 ha), plaza.
Although the plaza appears to be a naturally flat area, it has been modified extensively.
In the 1970s, excavations revealed evidence of huge wooden posts in the western plaza.
[10] Later geophysical survey identified several complex circular magnetic features, ranging from about 82xc2xa0ft (25 m) to 206xc2xa0ft (63 m) in diameter, in the southern half of the plaza.
Mound C is located inside the plaza area near the eastern edge of Macon Ridge.
Barrels outline circular structures in the 37.5-acre (17.4 ha) plaza at Poverty Point
Archaeological excavations determined that prior to the construction of the earthworks, prehistoric workers leveled the land around the site and filled in gullies and other low places to create the flat central plaza and surfaces on which to build the mounds and ridges.
Michael Hargrave and Berle Clay conducted a large area geophysical survey from 2006 to 2012, using magnetic gradiometry and resistivity to investigate the plaza and ridge system.
Since 2006, Rinita Dalan has measured magnetic susceptibility of cores and downed cored holes to understand features identified by the gradiometer surveys as well as the construction of the ridges and plaza.
The complex includes large mounds and associated borrow/quarry areas, six semi-elliptical earthen ridges with an outer diameter of 1.14 km and a large flat plaza bordered by the ridges.
All the singular elements that make up the complex as they survive in shape and substance xe2x80x93 the mounds, the system of ridges and swales, the aisles, the plaza with the posthole circles, the causeway, the bisector ridge, the dock and the borrow areas xe2x80x93 as well as their spatial organisation in relation to the topography, illustrate the refined use of natural features and topography to create a designed monumental landscape.