This Groundhog’s Dig Revealed a 19,000-Year-Old Secret

May 6, 2026

What started with a groundhog digging in the dirt turned into one of the most important archaeological discoveries in North America, revealing human history dating back nearly 19,000 years.

In Avella, Pennsylvania, the Meadowcroft Rockshelter is now open for the season, giving visitors a rare chance to stand in a place where people may have lived thousands of years before previously believed.

via WGAL News 8

Back in 1955, local farmer and amateur archaeologist Albert Miller noticed something unusual near Cross Creek. A groundhog had burrowed beneath a massive rock overhang, exposing artifacts that immediately caught his attention.

Miller believed he had stumbled onto something significant. He carefully expanded the opening, uncovered more artifacts, and spent the next 18 years searching for a professional archaeologist to properly excavate the site.

In 1973, the University of Pittsburgh sent archaeologist James Adavasio to lead an excavation.

What they found went far beyond expectations.

“It wasn’t long before they realized the site is older and deeper than anyone had anticipated,” said site director David Scofield.

The findings challenged long-standing beliefs about when humans first arrived in North America. At the time, the Clovis people were thought to be the earliest inhabitants. But evidence from Meadowcroft suggested humans were here 5,000 years earlier.

via WGAL News 8

One of the most fascinating aspects of the site is how clearly it reveals history layer by layer.

"The deeper you dig, the further back in time you go in history. The surface is present day. Just a few inches down you see 1775. That's about the time George Washington was hanging out in Western PA. There you see another ten inches down or so, the year 1265. That's the date. And the deepest part of this dig dates back 19,000 years," explained journalist Shannon Perrine.

Today, visitors can explore the site and stand in the same space where ancient people once lived.

“You can come stand where prehistoric people stood,” Scofield said. “Where else are you going to do that?”

Watch the video below: