Youngest Crater on Earth: China’s Newly Discovered Impact Site Revealed by Satellite

A recently uncovered, partially preserved impact crater in northeastern China is drawing attention from scientists worldwide. Satellite imagery reveals the horseshoe-shaped depression in Heilongjiang province and research suggests it may be the youngest major impact structure on Earth, formed between 46,000 and 53,000 years ago. The discovery, made possible by analysis of satellite photos taken by Landsat 8 on October 8, 2021, offers a rare glimpse into relatively recent geological events and challenges previous understandings of impact crater distribution, particularly within China.

A Hidden Landscape Revealed

The Yilan crater, located approximately 12.5 miles (20 kilometers) northwest of the town of Yilan, is roughly 1.15 miles (1.85 km) across, with walls rising up to 500 feet (150 meters) above the crater floor. For years, the structure remained largely unnoticed, concealed by dense forests. Locals were aware of the circular formation, referring to it as “Quanshan,” meaning “circular mountain ridge,” but were unaware of its extraterrestrial origins. It wasn’t until mid-2021 that Chinese researchers began investigating the site, ultimately confirming its status as an impact crater. NASA’s Earth Observatory provides further details on the discovery and its significance.

Evidence of a Cosmic Collision

The evidence supporting the crater’s impact origin is compelling. Researchers excavated to a depth of 1,440 feet (440 meters) beneath the crater floor, uncovering “shocked quartz, melted granite, glass containing holes formed by gas bubbles, and tear-drop-shaped glass fragments.” These features are telltale signs of the immense pressure and heat generated by a high-velocity impact event. Shocked quartz, for example, exhibits a distinctive microscopic structure altered by the extreme forces of an impact. The presence of melted rock and impact glass further reinforces the conclusion that a sizable space rock collided with the Earth at this location.

China’s Emerging Crater Landscape

Prior to the Yilan crater’s confirmation, only one other impact crater had been definitively identified in China: the Xiuyan crater in Liaoning province, dating back between 330,000 and 1.1 million years ago. Given China’s vast land area, the relative scarcity of known impact craters has long been a scientific puzzle. The recent discoveries suggest that more may be hidden beneath vegetation or obscured by erosion. In September 2023, scientists discovered a third Chinese crater carved into a mountaintop near the North Korean border, dating back at least 150 million years. More recently, in October 2025, the Jinlin crater in Guangdong province was confirmed, potentially dating to as recently as the current geological epoch, though its age remains unconfirmed. Further research on the Jinlin crater is available through the American Institute of Physics.

Comparing Yilan to Other Impact Sites

The Yilan crater’s age places it among the youngest known impact structures on Earth. Previously, Barringer Crater (Meteor Crater) in Arizona, formed approximately 50,000 years ago, was widely considered the most recent major impact event. While the Yilan crater’s age is still being refined, current estimates suggest it may be even younger. The Yilan crater is the largest impact crater discovered to date that formed within the last 100,000 years, surpassing Barringer Crater, which measures around 0.75 miles (1.2 km) in diameter. The Lunar and Planetary Institute provides detailed information on Barringer Crater and other significant impact sites.

An Incomplete Picture

The Yilan crater is not fully intact; the southern third of its rim appears to be missing. The cause of this erosion or collapse remains unclear. Yet, sediment deposits within the crater suggest that a lake may have once occupied the structure, indicating that the rim was originally complete. The incomplete nature of the crater adds complexity to its study, but too provides insights into the long-term effects of impact events and the processes that reshape landscapes over time.

What This Means for Understanding Earth’s History

Impact craters provide valuable information about the history of our planet and the potential hazards posed by near-Earth objects. While large-scale impacts are relatively rare, they can have significant consequences, including regional or global environmental changes. Studying impact craters helps scientists understand the frequency and magnitude of these events, assess the risks, and develop strategies for mitigating potential threats. The discovery of the Yilan crater, and the increasing identification of other impact structures in China, contributes to a more complete understanding of Earth’s impact record.

The ongoing research into the Yilan crater and other newly discovered sites will likely involve further geological surveys, radiometric dating, and modeling of the impact event. These efforts will help refine the age estimates, determine the size and velocity of the impacting object, and assess the environmental effects of the collision. As our understanding of impact craters evolves, so too will our ability to protect our planet from future threats.