The United States is under 250 years old, but some of its maximum archaeological sites are older than Vikings sailors, the Roman empire and the pyramids.

Many of those puts are open to the public, so you can see the old story of yourself.

Prehistoric camels, mammoths and other giant people have traveled, which is now new, when it is greener and more humid.

Recent studies place some of these fossilized digital footprints between 21,000 and 23,000 years. If the dates are correct, the prior impressions to other archaeological sites in the United States, raising interesting questions that those other people were and how they reached the state of the southwest.

While they can absorb white and homonymous sands, Pas’s footprints are prohibited lately.

In the 1970s, archaeologist James, Mr. Adovasio, caused controversy when he and his colleagues that the stone team and other artifacts discovered in southwest Pennsylvania belonged to humans who had lived in the region 16,000 years ago.

At the time, skeptics said that the radiocarbon dating evidence was flawed, AP News reported in 2016. In the years since, more sites that appear older than 13,000 years have been found across the US.

Feder said Adovasio meticulously excavated the site, but there’s still no clear consensus about the age of the oldest artifacts. Still, he said, “that site is absolutely a major, important, significant site.” It helped archaeologists realize humans started arriving on the continent before the Clovis people.

The dig itself is on display at the Heinz History Center, allowing visitors to see an excavation in person.

One site that’s added intriguing evidence to the pre-Clovis theory is located in western Idaho. Humans living there left stone tools and charred bones in a hearth between 14,000 and 16,000 years ago, according to radiocarbon dating. Other researchers put the dates closer to 11,500 years ago.

These stemmed tools are different from the Clovis fluted projectiles, researchers wrote in a 2019 Science Advances paper.

Some scientists think humans may have been traveling along the West Coast at this time, when huge ice sheets covered Alaska and Canada. “People using boats, using canoes could hop along that coast and end up in North America long before those glacial ice bodies decoupled,” Feder said.

Cooper’s Ferry is located on traditional Nez Perce land, which the Bureau of Land Management holds in public ownership.

In the early 1980s, former Navy SEAL Buddy Page alerted paleontologists and archaeologists to a sinkhole nicknamed “Booger Hole” in the Aucilla River. There, the researchers found mammoth and mastodon bones and stone tools.

They also discovered a mastodon tusk with what appeared to be cut marks believed to be made by a tool. Other scientists have returned to the site more recently, bringing up more bones and tools. They used radiocarbon dating, which established the site as pre-Clovis.

“The stone tools and faunal remains at the site show that at 14,550 years ago, people knew how to find game, fresh water and material for making tools,” Michael Waters, one of the researchers, said in a statement in 2016. “These people were well-adapted to this environment.”

Since the site is both underwater and on private property, it’s not open to visitors.

Scientists study coprolites, or fossilized poop, to learn about the diets of long-dead animals. Mineralized waste can also reveal much more. In 2020, archaeologist Dennis Jenkins published a paper on coprolites from an Oregon cave that were over 14,000 years old.

The Federal Land Management Office owns the land where the caves are located, and are signed at the beginning of historical places.

The in Alaska with the oldest evidence of human housing is Swan Point, in the region of the central-east of the State. In addition to the 14,000 -year -old teams and homes, gigantic bones were discovered there.

In 1929, James Ridgley, 1929, 1929, discovered gigantic bones with striated projectile problems near Clovis, in New Mexico. The other Clovis people who made these teams were named for this site.

The researchers who examine the site began to realize that the artifacts discovered on the site belonged to other cultures. Clovis’s problems are larger than Folsom flutes, which were first discovered in another archaeological site of New Mexico.

For decades after Whiteman’s discovery, the idea of ​​the mavens that the other people of Clovis were the first to cross the Bering d’Aring land bridge about 13,000 years ago. It is believed that the estimates of the arrival of humans are now at least 15,000 years ago.

Archaeologists discovered the bones of the child in 2013. Local teams call it xach’ite’anenh t’eede gay, or dawn girl. Genetic tests revealed that the 11,300 -year -old baby belonged to a Amerindian population in the unknown past, the ancient Beringios.

Based on the child’s genetic information, the researchers learned that he was connected to fashion asleans, but not directly. His non -unusual ancestors began to remarry genetically 25,000 years before dividing into two teams after a few thousand years: the ancient Berignians and the ancestors of the fashionable Americans.

The artifacts that the equipment left implies that the site has been used and for many years and was an assembly point for trade. People have brought equipment and rocks at 800 miles away. The remains of deer, fish, frogs, caimanes, nuts, grapes and other foods have given archaeologists a review of their nutrition and daily life.

You can see the world heritage site through yourself throughout the year.

Although it rises, the multicolored walls of the Horseshoe canyon have attracted visitors for a long time. Some of its artifacts return between 9,000 and 7,000 a. C. , but its pictograms are more recent. Some tests date from safe sections of around 2,000 to 900 years.

The 4 galleries involve photographs of life size of anthropomorphic and animals figures in what is known as the Canyon barrier style. Much of this art is in Utah, produced through the archaic culture of the desert.

It is a complicated walk to succeed in pictograms (and the NPS warns that it can be dangerously hot in summer) but it is seeing in person, Feder said. “These are artistic geniuses,” he said about artists.

The other people of Navajo, also known as Diné, still live in Canyon de Chelly. Diné Alastair journalist Lee Bitsóí recently wrote about some of the sacred and taboo areas. They come with Tsé Yaa Kin, where archaeologists have discovered human remains.

In the 1860s, the United States government forced 8,000 Navajo to move to Fort Sumner in New Mexico. Fatal adventure is known as the “long walk. ” Finally, they were able to return, their houses and their cultures were destroyed.

The Mesa Verde National Park has a large number of homes, adding the Palais de Falaises. It has more than one hundred rooms and approximately two dozen kivas or ceremonial areas.

With the help of dendrocronology or trees dating, archaeologists learned when the ancestral people built some of those structures and that emigrated outside the doors of the region through the years 1300.

Feder said it was his favorite archaeological site he visited. “You don’t need to leave because you can’t be real,” he said.

Cahokia called one of the first cities in North America. Not far from St. Louis existing, around 10,000 to 20,000 people lived in dense colonies about 1,000 years ago. The important buildings were sitting on the most sensible giant mounds, which the Mississippiens built by hand, The Guardian reported.

At that time, he is booming with hunters, farmers and artisans. “It’s an agricultural civilization,” Feder said. “It is a position where raw fabrics arrive thousands kilometers away. ” The researchers also discovered articular wells, potentially discovered in human sacrifices.

Although Cahokia is open to the public, the portions are recently closed for renovations.

Presented in a limestone cliff in Camp Verde, Arizona, this is an apartment, not a castle, and is not connected to Sovereign Aztec Montezuma.

Feder said that the accommodation is quite accessible, with a short walk along a path to see it, visitors cannot enter the construction itself.