Uncharted Lancaster

Mayflies: Susquehanna Bug Blizzard

In this episode, we explore the astonishing life cycle of the mayfly and the massive annual hatch along the lower Susquehanna River, where clouds of insects can grow so dense they shut down bridges and force crews to clear the roadway with snow plows. The transcript traces how these insects spend most of their lives hidden underwater as nymphs, only to emerge in a brief, frantic burst of flight, mating, and egg-laying that has remained largely unchanged for more than 300 million years.  The episode also explains why this spectacular swarm is far more than a nuisance. It reveals how mayflies act as a crucial indicator species, signaling the health of the river, and how their return marks one of the Susquehanna’s great environmental recovery stories after decades of pollution. Along the way, it examines the strange collision between ancient biology and modern infrastructure, including the way bridge lights can trick mayflies into laying their eggs on asphalt instead of water.  At its core, this is a story about ecological resilience, unintended consequences, and the messy reality of environmental restoration. What looks like chaos on a summer night is actually a powerful sign that the river is alive again.

The 1906 Shenks Ferry Dynamite Disaster

On June 9, 1906, a quiet riverside community at Shenks Ferry was shattered by one of the deadliest disasters in Lancaster County history. In this episode, we revisit the catastrophic explosion at the McAfee Powder & Oil Company, where a blast inside the factory’s “punch house” instantly killed eleven workers and sent shockwaves across the surrounding countryside. The force of the explosion was so severe that many of the victims could not be identified, leading to a somber mass burial marked simply: “Our Boys.” Through newspaper accounts and the firsthand diary entries of a local undertaker, we explore the aftermath of the tragedy and the deep grief felt in Colemanville and beyond. Despite a formal investigation, the exact cause of the explosion remains uncertain—adding an enduring layer of mystery to an already heartbreaking event. Today, the site rests quietly in the woods, its faint ruins and memorial serving as a powerful reminder of lives lost in an era when industry often came at a devastating cost. Click here to read more. [https://unchartedlancaster.com/2022/06/09/on-this-day-in-history-the-1906-shenks-ferry-tnt-factory-explosion-obliterates-11-men/] Read More! Uncharted Lancaster’s Ghosts, Monsters, and Tales of Adventure [https://unchartedlancaster.com/product/ghosts-monsters-and-tales-of-adventure/] takes readers on a 283-page spine-tingling journey through Lancaster County’s haunted history, eerie legends, and hidden treasures. From ghostly apparitions to outlaw loot, these 64 true local stories blend real history with gripping folklore. Order your copy today. [https://unchartedlancaster.com/product/ghosts-monsters-and-tales-of-adventure/]

Dugout Canoes of the Susquehanna

In this episode, we explore the engineering, history, and surprising sophistication of the dugout canoe, especially as it relates to the rocky, fast-moving waterways of the Susquehanna River. The transcript shows how these heavy, durable boats were perfectly adapted to local conditions that would have destroyed lighter craft, and how Indigenous builders created them using fire, shells, and deep practical knowledge of wood, water, and river travel.  The episode also follows the wider story of dugouts across time, from ancient global migrations to massive river canoes in North America, while highlighting a modern archaeological experiment that challenged long-held assumptions about how these vessels were built. In the end, it becomes a story not just about boats, but about forgotten engineering, experimental archaeology, and the value of rethinking what we assume we know about the past.

Billmeyer and the White Cliffs of Conoy

In this episode, we explore the vanished company town of Billmeyer, Pennsylvania, and the strange white cliffs it left behind along the Susquehanna River. What begins as the story of a small lime-burning operation grows into a much larger tale of industrial ambition, as Billmeyer becomes a booming quarry town whose limestone and dolomite helped fuel the steel industry, support wartime production, and build major pieces of Pennsylvania infrastructure.  The episode also follows the human side of that rise and fall, from the rough culture of an isolated company town to the hardships of the 1918 flu quarantine, when residents were so cut off that supplies had to be thrown from passing trains. As the industry faded, the town slowly emptied, its homes and businesses disappeared, and the landscape was reclaimed by water, forest, and time.  Today, little remains of Billmeyer except foundations, memories, and the haunting white cliffs of Conoy, formed from generations of industrial waste. More than a ghost town story, this episode is about labor, geology, impermanence, and the strange ways abandoned industry can become part of the natural landscape.  To learn more, visit UnchartedLancaster.com [https://unchartedlancaster.com/the-rise-and-fall-of-billmeyer-and-the-white-cliffs-of-conoy/]. Learn about other unique people and places like this when you step off the beaten path with Uncharted Lancaster: Field Guide to the Strange, Storied, and Hidden Places of Lancaster County, Pennsylvania [https://unchartedlancaster.com/product/uncharted-lancaster-a-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. Order your copy here [https://unchartedlancaster.com/product/uncharted-lancaster-a-field-guide-to-the-strange-storied-and-hidden-places-of-lancaster-county-pennsylvania/].

The Pawpaw: America’s Forgotten Fruit

This episode explores the surprising story of the pawpaw, North America’s largest native sweet fruit. Often described as tasting like a mix of banana, mango, and pineapple, the pawpaw seems tropical but thrives in temperate forests from the Midwest to the Mid-Atlantic. The episode traces its journey from prehistoric megafauna and Indigenous foodways to its role as a survival food for explorers, Civil War soldiers, and freedom seekers on the Underground Railroad. It also examines why the pawpaw disappeared from mainstream grocery stores, how folklore and place names kept its memory alive, and why the fruit is now experiencing a comeback among foragers, chefs, brewers, and sustainable agriculture advocates. Along the way, the episode highlights the pawpaw’s strange biology, ecological importance, and potential future as a resilient native crop.