Long before dams and modern fisheries, the Susquehanna River was home to an ingenious system of stone fishing traps built by Indigenous peoples to harvest migrating American eels. In this episode, we explore the mysterious V-shaped rock weirs that still lie hidden beneath the river’s surface—carefully engineered formations that funneled eels into traps, providing a reliable and protein-rich food source that could be smoked and stored through the winter.

Some researchers believe these sophisticated stone structures may be thousands of years old, possibly predating even the Egyptian pyramids. Today, many of them remain submerged or forgotten, but archaeologists, students, and conservationists are rediscovering them through satellite imagery while working to restore the Susquehanna’s fragile ecosystem. It’s a story where archaeology, ecology, and river lore come together—revealing just how central the eel once was to life along the Susquehanna.

Read more at UnchartedLancaster.com.

Cover Art: Native Lands by Artist Carol Oldenburg, 2021 hightlighting eel harvesting on the Susquehanna River

Along the lower Susquehanna River, carved into exposed rock shelves and river islands, sits one of Pennsylvania’s most remarkable Indigenous heritage sites: the Safe Harbor petroglyphs. In this episode, we take a deep dive into these ancient stone images, created primarily by the Shenks Ferry people roughly 800 to 1,200 years ago. Animal tracks, human figures, and other powerful symbols appear across the rock, and some carvings even seem tied to the sky, aligning with seasonal markers like solstices and equinoxes.

We’ll trace the long, complicated story of how the petroglyphs were recorded, studied, and fought for, from early 1800s documentation and plaster casts to the modern reality of dams, shifting water levels, and environmental wear. Most importantly, we talk about what these carvings are and what they are not: not “prehistoric graffiti,” but part of a ceremonial landscape with real spiritual and cultural weight. We’ll also explore how people can experience them today, from guided kayak trips when the river cooperates to surprising echoes of the carvings preserved in public art, including mosaics in the Pennsylvania State Capitol. And we’ll end with the only appropriate takeaway: if you visit, do it with humility. These aren’t just artifacts. They’re messages still sitting in the current.

Click here to schedule your visit to the Safe Harbor Petroglyphs.

📖 Learn about Lancaster County's many unique places when you step off the beaten path with Uncharted Lancaster: Field Guide to the Strange, Storied, and Hidden Places of Lancaster County, Pennsylvania by Adam Zurn. This one-of-a-kind 239-page guidebook uncovers 56 fascinating sites, from the county’s very own fountain of youth to the oldest continuously operating short-line railroad in the western hemisphere.

Packed with history, local stories, and GPS locations, this book is your ticket to exploring the mysterious corners of Lancaster like never before. Whether you’re a lifelong local, a history buff, or just looking for a unique adventure, this field guide will spark your curiosity and send you exploring. Start your adventure here.

In the spring of 1904, the Susquehanna River turned into a force of near unimaginable destruction. In this episode, we dive into the catastrophic ice jam flood that followed an exceptionally harsh winter, when a sudden thaw sent massive sheets of ice crashing downstream. In a matter of minutes, entire riverfront communities were overwhelmed—none more dramatically than Safe Harbor, which was nearly wiped out in a fifteen-minute surge of water and ice.

Railroads were torn apart, bridges collapsed, and even major industrial sites like the York Haven power plant were crippled. In the aftermath, thousands of laborers were brought in to clear mountains of ice—some piled as high as 50 feet—from vital transportation routes. Despite the scale of destruction, what stands out most is the remarkable lack of loss of life. It’s a story of raw natural force, resilience, and a disaster so immense that it still eclipses many of the floods that followed. Click here to read more.