Deep beneath the vast ice sheets of East Antarctica, scientists have uncovered something extraordinary — an ancient landscape that has remained frozen in time for tens of millions of years.

Buried under nearly a mile of ice lies a hidden world of enormous valleys, elevated land blocks, and ancient river systems. According to new research, this landscape may have been sealed off from sunlight for more than 34 million years, making it one of the most remarkably preserved ancient terrains on Earth.

A Landscape Hidden Beneath the Ice

Using advanced satellite data and ice-penetrating radar, researchers mapped a vast buried terrain beneath the East Antarctic Ice Sheet in a region known as Wilkes Land.

The landscape stretches across approximately 12,000 square miles (31,000 square kilometers) — roughly the size of the U.S. state of Maryland.

What scientists discovered beneath the ice was astonishing.

The hidden terrain contains enormous elevated blocks of land ranging from 120 to 170 kilometers (75 to 105 miles) in length. Between these blocks lie vast valleys nearly 40 kilometers (25 miles) wide and reaching depths of up to 1,200 meters (3,900 feet).

These massive geological structures strongly suggest the landscape was once shaped by flowing rivers long before Antarctica became covered in ice.

Antarctica Before the Ice Age

Millions of years ago, Antarctica looked very different from the frozen continent we know today.

During earlier geological periods, the region likely experienced a much warmer climate, possibly supporting forests, rivers, and diverse ecosystems. Scientists believe the valleys and landforms discovered beneath the ice were carved by ancient river systems that flowed across the continent before the Antarctic Ice Sheet formed.

Eventually, as Earth’s climate cooled and Antarctica drifted further south, massive ice sheets began to expand across the continent — burying the landscape beneath kilometers of ice.

A Geological Time Capsule

What makes this discovery particularly remarkable is how well preserved the landscape appears to be.

Normally, glaciers grind and erode the terrain beneath them as they slowly move across the land. However, the ice covering this region of East Antarctica is extremely cold, thick, and slow-moving. Because of this, the buried terrain has remained largely untouched for tens of millions of years.

Scientists describe the region as a geological time capsule, preserving a snapshot of Antarctica from a time before the continent froze.

Unlocking Earth’s Climate History

Researchers now hope to drill through the ice to reach the buried terrain. By studying ancient soils, sediments, or organic material trapped beneath the ice, scientists could gain valuable insights into what Antarctica’s environment was like before the ice sheets formed.

These discoveries may also help researchers better understand how Antarctica’s ice sheet developed and how Earth’s climate has changed over millions of years.

Understanding this ancient landscape could even improve climate models that predict the future behavior of polar ice sheets in a warming world.

A Hidden World Beneath the Ice

Despite decades of research in Antarctica, this discovery shows that much of the continent remains unexplored beneath its frozen surface.

Entire landscapes — shaped by rivers, mountains, and valleys millions of years ago — may still lie hidden beneath the ice.

And as new technologies continue to reveal what lies below, scientists are discovering that Antarctica still holds many secrets waiting to be uncovered.

Study Reference

“A Preserved Pre-Glacial Landscape Beneath the East Antarctic Ice Sheet.”
Published in Nature Communications, 2023.