See the largest Native American rock art

In a new study published in the journal Antiquities, scientists have reconstructed 19th century rock art.

Nameless cave. This cave is located on private land in northern Alabama, but its exact location is kept secret.

The ceiling of the cave is more than half a meter high, so the researchers had to lie on their backs to see most of the images.

To examine all the images, the authors used 3D photogrammetry to create a realistic 3D model of everything inside.

The explorers descended into the cave and with the helptripod started taking pictures. Within 2 months they made almost 16,000 high resolution images. They then stitched the photos together using computer software to align the images in 3D space. The authors then manipulated the resulting model using virtual reality software.

During this, scientists saw five hugehieroglyphs that were previously too large and dim. They were three humanoid beings dressed in royal robes, a figure with a tail that looked like a rattlesnake, and another long scaled snake. Images in were 0.93 to 3.37 m long.

Read more:

Look at the "silent" drone with a new generation of ion propulsion

Upper stage engine of GLONASS rocket exploded in Earth orbit

Scientists propose to revise the foundations of quantum physics and show where they do not work