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 assistance say how the first humans arrived here in North America. It is a mystery precisely how and when other people arrived, although it is widely believed that they crossed the Bering Strait at least 15,000 years.

“As we return to time, while we have other people who are getting smaller and smaller, locating those positions and interpreting them becomes increasingly difficult,” said archaeologist Kenneth Feder a Business Insider. He is “ancient America: fifty archaeological sites to see through yourself. “

Some sites, such as White Sands and Cooper’s Ferry, have skeptics about the precision of their age. However, they give a contribution to our understanding of some of the first Americans.

“Where do they come from?” Feder said. “Not parachute to the new Mexico. They will have to come from another place, which means that there are still older places. ” Archaeologists have simply not discovered them yet.

For decades, scientists have discovered evidence of human homes that seemed to have between 12,000 and 13,000 years, belonging to the Clovis culture. For a long time they would have been the first to cross the Bering land bridge. Humans who have arrived in North America before this organization are called before Clovis.

These rod teams are other Clovis harassed projectiles, researchers wrote in a 2019 clinical magazine.

Some scientists that humans had possibly traveled along the west coast at that time, when glacial capital letters covered Alaska and Canada. “People who use boats, who use canoes can also jump through this coast and meet in North America long before these glacial bodies are cut,” Feder said.

They also discovered a mastodon defense with what seemed to reduce the marks through a tool. Other scientists have returned to the site more recently, raising more bones and tools. They used a radiocarbon dating, which established the site as a pre-clavis.

“The stone machinery and on the site show that at 14,550, other people knew how to locate the game, the new water and the device to make machinery,” said Michael Waters, one of the researchers, in a press release in 2016. “These other people were well suitable for this environment. “

Since it is underwater and personal property, it is not open to visitors.

Located in southcentral Oregon, the caves appear to be a piece of the puzzle indicating how humans spread throughout the continent thousands of years ago.

The federal Bureau of Land Management owns the land where the caves are found, and they are listed on the National Register of Historic Places.

Whenever people arrived in the Americas, they crossed from Siberia into Beringia, an area of land and sea between Russia and Canada and Alaska. Now it’s covered in water, but there was once a land bridge connecting them.

The site in Alaska with the oldest evidence of human habitation is Swan Point, in the state’s eastern-central region. In addition to tools and hearths dating back 14,000 years, mammoth bones have been found there.

Researchers think this area was a kind of seasonal hunting camp. As mammoths returned during certain times of the years, humans would track them and kill them, providing plentiful food for the hunter-gatherers.

While Alaska may have a wealth of archaeological evidence of early Americans, it’s also a difficult place to excavate. “Your digging season is very narrow, and it’s expensive,” Feder said. Some require a helicopter to reach, for example.

In 1929, 19-year-old James Ridgley Whiteman found mammoth bones along with fluted projectile points near Clovis, New Mexico. The Clovis people who made these tools were named for this site.

Researchers studying the site began to realize the artifacts found at the site belonged to different cultures. Clovis points are typically larger than Folsom flutes, which were first found at another archaeological site in New Mexico.

For decades after Whiteman’s discovery, experts thought the Clovis people were the first to cross the Bering land bridge from Asia around 13,000 years ago. Estimates for humans’ arrival is now thought to be at least 15,000 years ago.

Eastern New Mexico University’s Blackwater Draw Museum grants access to the archaeological site between April and October.

One reason the dates of human occupation in North America is so contentious is that very few ancient remains have been found. Among the oldest is a child from Upward Sun River, or Xaasaa Na’, in Central Alaska.

Archaeologists found the bones of the child in 2013. Local indigenous groups refer to her as Xach’itee’aanenh t’eede gay, or Sunrise Girl-Child. Genetic testing revealed the 11,300-year-old infant belonged to a previously unknown Native American population, the Ancient Beringians.

Extending more than 80 feet long and five feet high, rows of curved poverty are wonderful when it shows from above. More than 3,000 years ago, the hunters-gatherers built them in tons of land. Scientists do not know precisely why other people have built them, whether ceremonial or a state demonstration.

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.

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.

More than 900 years ago, the other town of Puebloan built the White House, which bears the name of the shadow of their clay. Its upper floors are sitting in a sandstone cliff, with a transparent fall of the windows.

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.

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.

Tourists can see many of those housing on the road, but some are also available after a walk. Some want more tickets and can congested, Feder said.

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

The population was also practical, discovering irrigation systems and structure techniques, such as thick walls and shaded spots, to help them in the warm and dry climate.

Hop