Ancient footprints of Acahualinca
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The Ancient footprints of Acahualinca (; es, Huellas de Acahualinca) exist in
Managua ) , settlement_type = Capital city , motto = , image_map = , mapsize = , map_caption = , pushpin_map = Nicar ...
,
Nicaragua Nicaragua (; ), officially the Republic of Nicaragua (), is the largest country in Central America, bordered by Honduras to the north, the Caribbean to the east, Costa Rica to the south, and the Pacific Ocean to the west. Managua is the coun ...
near the southern shore of
Lake Managua Lake Managua ( es, Lago de Managua, ), also known as Lake Xolotlán (), is a lake in Nicaragua. At 1,042 km², it is approximately long and wide. Similarly to the name of Lake Nicaragua, its other name comes from the Nahuatl language, possi ...
. The region was once called "El Cauce". The tracks are fossil Late
Holocene The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene togeth ...
human footprints left behind in volcanic ash and mud, which solidified about 2,120±120 years ago, shortly after the group of up to 15 people passed by. It is sometimes reported that the people were running to escape from a volcanic explosion, but the distance between the footprints indicates a walking gait. Fossilized footprints of several animals are also present, but the fact that they intersect the human footprints shows they were not traveling with the people.


Scientific analysis of the footprints

In 1874, construction workers discovered the footprints. The United States medical doctor and
archaeological Archaeology or archeology is the scientific study of human activity through the recovery and analysis of material culture. The archaeological record consists of artifacts, architecture, biofacts or ecofacts, sites, and cultural landscap ...
collector, Earl Flint, brought the footprints to the attention of the international science community and media in 1884. The
Carnegie Institution of Washington The Carnegie Institution of Washington (the organization's legal name), known also for public purposes as the Carnegie Institution for Science (CIS), is an organization in the United States established to fund and perform scientific research. Th ...
began the first scientific analysis and excavations of the area in 1941 and 1942. They also constructed a museum and a building to protect the footprints. Work was continued by Joaquín Matilló, Allan L. Bryan and Jorge Espinosa in the 1960s and 1970s. Allan L. Bryan, from the
University of Alberta The University of Alberta, also known as U of A or UAlberta, is a Public university, public research university located in Edmonton, Alberta, Canada. It was founded in 1908 by Alexander Cameron Rutherford,"A Gentleman of Strathcona – Alexande ...
, used
radiocarbon dating Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon. The method was de ...
to determine the age of soil humates, from a buried soil directly underlying the footprints, to 5,945±145 radiocarbon years
Before Present Before Present (BP) years, or "years before present", is a time scale used mainly in archaeology, geology and other scientific disciplines to specify when events occurred relative to the origin of practical radiocarbon dating in the 1950s. Beca ...
. Based upon this date, he estimated that the footprints dated to about 5,000
Before Present Before Present (BP) years, or "years before present", is a time scale used mainly in archaeology, geology and other scientific disciplines to specify when events occurred relative to the origin of practical radiocarbon dating in the 1950s. Beca ...
. But, later dating of the
volcanic A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plat ...
deposits in which they occur, known as the Masaya Triple Layer, demonstrated that the fossil tracks are only about 2,120 ± 120 years old. In 1978, the Nicaraguan researcher Jorge Espinosa continued the excavation near the termination of the original excavation. He uncovered more footprints at a depth of 4 meters. The track is believed to continue further. Specimens of these footprints can be viewed at both the Peabody Museum of Archaeology at
Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of highe ...
and the
United States National Museum The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums and education and research centers, the largest such complex in the world, created by the U.S. government "for the increase and diffusion of knowledge". Founded ...
.


Acahualinca Museum

The "Museo Sitio Huellas de Acahualinca" is located at west of Managua, in the eponymous Acahualinca town. The museum was founded in 1953 by Nicaraguan scientist Leonor Martínez, later in 1989, was rescued, restored and fitted out with the support of "ASDI" and the Historical Museum of Sweden. In addition to footprints, the museum features a small collection of pottery and other items of archaeological interest from several sites in Nicaragua. Previously there were
stone tools A stone tool is, in the most general sense, any tool made either partially or entirely out of stone. Although stone tool-dependent societies and cultures still exist today, most stone tools are associated with prehistoric (particularly Stone Ag ...
and a skull from
León Viejo Ruins of León Viejo is a World Heritage Site in Nicaragua. It was the original location of León. It is the present location of the town of Puerto Momotombo in the Municipality of La Paz Centro of the Department of León. It is administered ...
.


Gallery


See also

*
Eve's footprint Eve's footprint is the popular name for a set of fossilized footprints discovered on the shore of Langebaan Lagoon, South Africa in 1995. They are thought to be those of a female human and have been dated to approximately 117,000 years ago. This ...
— footprints of a single female found at
Langebaan Langebaan is a town in the Western Cape province of South Africa on the eastern shore of Langebaan Lagoon. Langebaan is situated 120 km north of Cape Town, just off the R27, about 28 km from Vredenburg and 20 km from Saldanha Ba ...
,
South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring coun ...
in 1995, dating to approximately 117,000 years ago. *
Happisburgh footprints The Happisburgh footprints were a set of fossilized hominid footprints that date to the early Pleistocene, over 800,000 years ago. They were discovered in May 2013 in a newly uncovered sediment layer of the Cromer Forest Bed on a beach at Happ ...
— early Pleistocene fossilized hominid footprints found in a sediment layer on a beach at Happisburgh in Norfolk, England, dating to more than 800,000 years ago, *
Ileret Ileret (also spelled Illeret) is a village in Marsabit County, Kenya. It is located in Northern Kenya, on the eastern shore of Lake Turkana, north of Sibiloi National Park and near the Ethiopian border. Numerous hominin fossils have been found ...
— footprints of ''
Homo erectus ''Homo erectus'' (; meaning "upright man") is an extinct species of archaic human from the Pleistocene, with its earliest occurrence about 2 million years ago. Several human species, such as '' H. heidelbergensis'' and '' H. antecessor ...
'' found at Ileret, Northern
Kenya ) , national_anthem = " Ee Mungu Nguvu Yetu"() , image_map = , map_caption = , image_map2 = , capital = Nairobi , coordinates = , largest_city = Nairobi , ...
, dating to approximately 1.5 million years ago. *
Laetoli Laetoli is a pre-historic site located in Enduleni ward of Ngorongoro District in Arusha Region, Tanzania. The site is dated to the Plio-Pleistocene and famous for its Hominina footprints, preserved in volcanic ash. The site of the Laetoli fo ...
footprints — a line of
hominid The Hominidae (), whose members are known as the great apes or hominids (), are a taxonomic family of primates that includes eight extant species in four genera: '' Pongo'' (the Bornean, Sumatran and Tapanuli orangutan); ''Gorilla'' (the ...
footprints, discovered at
Laetoli Laetoli is a pre-historic site located in Enduleni ward of Ngorongoro District in Arusha Region, Tanzania. The site is dated to the Plio-Pleistocene and famous for its Hominina footprints, preserved in volcanic ash. The site of the Laetoli fo ...
,
Tanzania Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands ...
by
Mary Leakey Mary Douglas Leakey, FBA (née Nicol, 6 February 1913 – 9 December 1996) was a British paleoanthropologist who discovered the first fossilised ''Proconsul'' skull, an extinct ape which is now believed to be ancestral to humans. She also disc ...
in 1976, dating to approximately 3.6 million years ago. *
List of fossil sites This list of fossil sites is a worldwide list of localities known well for the presence of fossils. Some entries in this list are notable for a single, unique find, while others are notable for the large number of fossils found there. Many of t ...
''(with link directory)'' * List of hominina (hominid) fossils ''(with images)''


References


External links


Human Timeline (Interactive)
Smithsonian,
National Museum of Natural History The National Museum of Natural History is a natural history museum administered by the Smithsonian Institution, located on the National Mall in Washington, D.C., United States. It has free admission and is open 364 days a year. In 2021, with 7. ...
(August 2016). {{Nicaragua topics Mesoamerican sites Archaeological sites in Nicaragua Managua Fossil trackways Homo sapiens fossils