National Register of Historic PlacesThe National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation for their historical significance or "great artistic value". A property listed in the National Register, or located within a National Register Historic District, may qualify for tax incentives derived from the total value of expenses incurred in preserving the property.
MoundA mound is a heaped pile of earth, gravel, sand, rocks, or debris. Most commonly, mounds are earthen formations such as hills and mountains, particularly if they appear artificial. A mound may be any rounded area of topographically higher elevation on any surface. Artificial mounds have been created for a variety of reasons throughout history, including habitation (see Tell and Terp), ceremonial (platform mound), burial (tumulus), and commemorative purposes (e.g. Kościuszko Mound).
Mound BuildersA number of pre-Columbian cultures in North America were collectively termed "Mound Builders", but the term has no formal meaning. It does not refer to a specific people or archaeological culture, but refers to the characteristic mound earthworks which indigenous peoples erected for an extended period of more than 5,000 years. The "Mound Builder" cultures span the period of roughly 3500 BCE (the construction of Watson Brake) to the 16th century CE, including the Archaic period, Woodland period (Calusa culture, Adena and Hopewell cultures), and Mississippian period.
March equinoxThe March equinox or northward equinox is the equinox on the Earth when the subsolar point appears to leave the Southern Hemisphere and cross the celestial equator, heading northward as seen from Earth. The March equinox is known as the vernal equinox (spring equinox) in the Northern Hemisphere and as the autumnal equinox in the Southern Hemisphere. On the Gregorian calendar, the northward equinox can occur as early as 19 March or as late as 21 March at 0° longitude.
Platform moundA platform mound is any earthwork or mound intended to support a structure or activity. It typically refers to a flat-topped mound, whose sides may be pyramidal. The indigenous peoples of North America built substructure mounds for well over a thousand years, starting in the Archaic period and continuing through the Woodland period. Many different archaeological cultures (Poverty Point culture, Troyville culture, Coles Creek culture, Plaquemine culture and Mississippian culture) of North Americas Eastern Woodlands are specifically well known for using platform mounds as a central aspect of their overarching religious practices and beliefs.
Illinois CountryThe Illinois Country (Pays des Illinois pɛ.i dez‿i.ji.nwa; "land of the Illinois (plural)", i.e. the Illinois people)—sometimes referred to as Upper Louisiana (Haute-Louisiane ot.lwi.zjan; Alta Luisiana)—was a vast region of New France claimed in the 1600s in what is now the Midwestern United States. While those names generally referred to the entire Upper Mississippi River watershed, French colonial settlement was concentrated along the Mississippi and Illinois Rivers in what is now the U.S.
Poverty PointPoverty Point State Historic Site/Poverty Point National Monument (Pointe de Pauvreté; 16 WC 5) is a prehistoric earthwork constructed by the Poverty Point culture, located in present-day northeastern Louisiana. Evidence of the Poverty Point culture extends throughout much of the Southeastern Woodlands of the Southern United States. The culture extended across the Mississippi Delta and south to the Gulf Coast. The Poverty Point site has been designated as a state historic site, U.S. National Monument, a U.
Monks MoundMonks Mound is the largest Pre-Columbian earthwork in the Americas and the largest pyramid north of Mesoamerica. The beginning of its construction dates from 900 to 955 CE. Located at the Cahokia Mounds UNESCO World Heritage Site near Collinsville, Illinois, the mound size was calculated in 1988 as about high, long including the access ramp at the southern end, and wide. This makes Monks Mound roughly the same size at its base as the Great Pyramid of Giza (). The perimeter of its base is larger than the Pyramid of the Sun at Teotihuacan.
Angel MoundsAngel Mounds State Historic Site (12 VG 1), an expression of the Mississippian culture, is an archaeological site managed by the Indiana State Museum and Historic Sites that includes more than of land about southeast of present-day Evansville, in Vanderburgh and Warrick counties in Indiana. The large residential and agricultural community was constructed and inhabited from AD 1100 to AD 1450, and served as the political, cultural, and economic center of the Angel chiefdom.
