Fens, Bogs, and Flowing Water of Malloryville Preserve of Freeville, New York

Discover Malloryville Preserve in Freeville, New York—a hidden Finger Lakes wetland of fens, bogs, and flowing water where glacial history and rare plants meet.

Water defines the O.D. von Engeln Preserve at Malloryville long before we see or hear it. At first, it is only a dampness in the air, a coolness at ankle level, a dark sheen between sedge tussocks. In the space of a half-hour walk, we pass through fen, bog, marsh, and swamp, each distinct, yet bound together by the same slow, persistent flow.

Here we are traversing a swamp, our steps buoyed along on planking made from recycled plastic. The boardwalk floats visually above pools the color of tea, edged with moss and skunk cabbage. It’s easy to imagine what this crossing would have been like before the planks were laid—boots sinking, knees splashed, delicate plants crushed. The modern walkway is a quiet compromise: we may enter this saturated world without trampling it, a human gesture that matches the preserve’s ethos of protection and restraint.

The Malloryville wetlands lie in a low pocket along Fall Creek, a landscape shaped by the last ice age. As the glacier that once covered this region melted, torrents of water tunneled through the ice, depositing braided ridges of sand and gravel known as eskers. Today, more than a mile of these ancient riverbeds winds through the preserve, narrow wooded spines rising above the surrounding wetlands. From an esker crest, the pattern of water reveals itself: dark channels of open flow, pale pools rimmed with sedge, patches of sphagnum floating like cushions, and, farther off, the straight silver of Fall Creek.

But the story of Malloryville’s water begins far from these pools. Rain falls on the uplands as cool, slightly acidic water. It sinks through glacial till—a jumble left by the ice—and begins a long, blind journey underground. As it moves, the water reacts with the minerals it encounters. Where it brushes limestone or other carbonate-rich layers, it is slowly neutralized and picks up dissolved calcium and magnesium. By the time it resurfaces in low spots, it may be transformed from sour, soft rain to mineral-rich groundwater.

Those subtle chemical shifts are written onto the land. In some hollows, where water still mainly reflects its origin as rain, the environment becomes a bog—cold, acidic, nutrient-poor. Here, sphagnum moss knits a floating carpet, and only specialists such as leatherleaf and cranberries can endure. In other pockets, where groundwater welling up from below brings minerals, we find fens: lush, lime-touched wetlands offering niches for orchids, sedges, and the carnivorous pitcher plant. Marshes and swamps round out the spectrum, their standing water and wooded shade forming still more microhabitats.

In this small preserve, all these wetland types coexist side by side, threaded by water that often moves so slowly it appears not to move at all. The stillness is deceptive. A slight difference in elevation—barely the height of your boot—can determine whether water spreads and stagnates, seeps outward in a fan, or concentrates into a narrow, unseen channel. Hydrologists studying the area have shown that a water-table mound of only a few inches can redirect the underground flow and, over time, steer the evolution from open fen to peat-filled bog.

Human history here is entwined with that quiet power. The founders of the preserve, themselves from a dairy farming family, came to understand that the springs, seeps, and wetlands feeding Fall Creek were vulnerable. Gravel pits on nearby land had already bitten into the valley; another such excavation on this side would have severed the veins of water that sustain the fen and bog. Their years-long effort to protect the property culminated in a Nature Conservancy preserve whose very purpose is to safeguard water and the uncommon communities it supports.

The boardwalk under our feet is part of that story. Its recycled-plastic planks do not rot in constant dampness, and their smooth, slightly hollow sound reminds us with each step that we are guests in a place where soil never truly dries. At the edges of the walkway, tamarack and red maple lift their trunks from hummocks, their roots anchored in peat built grain by grain from centuries of water-logged plant remains. In the open patches, we can seek out pitcher plants, their flaring, water-filled leaves digesting unwary insects to make up for the nutrient-poor conditions.

Everywhere, water moves almost invisibly. It rises as a cold trickle at the base of the esker, fans through the moss as a thin sheet, and gathers again in dark, tannin-stained channels. It rarely speaks aloud; only in spring flood or after hard rain does it murmur against roots or tap lightly at the plastic planks. Yet its influence is written in every texture and color—emerald moss, rusty sedge, the silvery bark of birch leaning over a pool.

To walk in Malloryville is to learn to read this subtle handwriting. We begin by noticing the obvious: the wetness, the boardwalk, the glimpses of standing water. By the end of the walk, we are tracing gradients—how the plants shift with elevation, how the ground feels underfoot, how the air cools or warms by a degree or two. We sense the long journey of water from sky to stone to peatland to creek, and onward to Cayuga Lake and the wider world beyond.

Water, flowing quietly, almost soundlessly, with powerful effect: Malloryville Preserve, that power is persistence. It is the power to carve a valley, to build a peatland one stem at a time, to sustain rare communities of plants and animals in a modest corner of New York. To honor such water is to move carefully, speak softly, and remember that our presence, like our boardwalk, should allow the flow beneath to continue its ancient work.

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Exploring Malloryville Preserve: A Hidden Glacial Wetland Gem in New York’s Finger Lakes

Explore the O.D. von Engeln Preserve at Malloryville, a hidden Finger Lakes wetland where glacial eskers, kettles, and springs reveal the deep story of ice and water.

In the heart of upstate New York, the Finger Lakes region stretches out like a handprint left by the last great ice sheets—long, narrow lakes aligned north to south, their steep-sided valleys feeding into a lattice of creeks, waterfalls, and wetlands. It is a landscape defined by water and time: glaciers grinding south, then melting back north some 12,000 years ago, carving deep troughs, piling up ridges of gravel and sand, and leaving behind a terrain that is anything but simple.

The O.D. von Engeln Preserve at Malloryville, near the small village of Freeville, is one of the quiet places where that story is written most clearly on the land. It doesn’t shout like Taughannock Falls or Ithaca’s famous gorges. Instead, it whispers—through the curves of its hills, the softness of its ground, the unexpected appearance of a spring at the base of a gravel ridge. Here, in a relatively compact area, you can see how ice and water worked together to shape the Finger Lakes region we know today.

Overflow from a Kettle Pond threads through a meadow before feeding Fall Creek. The O.D.von Engeln Preserve at Malloryville.

By the time the preserve officially opened in 1997, the name O.D. von Engeln was already familiar to anyone curious about local geology. His classic book on the Finger Lakes helped generations of readers understand that the scenery around them was not random, but the result of powerful, understandable processes. Reading von Engeln, the rolling hills and quiet valleys near Freeville become more than background—they become evidence: of buried ice, rushing meltwater, and the slow settling of sediments into the forms we walk on now.

Malloryville is an outdoor classroom for that lesson. The preserve is built around a cluster of glacial landforms—eskers, kames, and kettles—that create a three-dimensional mosaic of ridges and hollows. Eskers, those long, winding gravel ridges left by rivers that once flowed inside the glacier, snake through the forest like frozen currents of stone. Kames—steep, irregular hills of sand and gravel—rise suddenly from the surrounding lowlands. Kettles, the depressions left behind when buried ice blocks melted away, now cradle wetlands and pools.

Beneath and between these features, groundwater is constantly on the move. It seeps through layers of sand and gravel, emerges as cold springs at the foot of slopes, and spreads out into swamps, fens, and marshes. In the Finger Lakes, water is always telling a story; at Malloryville, it’s simply easier to hear. Follow the trail and you move through a succession of wet worlds: a seep-fed fen with delicate mosses and sedges, a shrub swamp where skunk cabbage thrusts up in early spring, a cattail marsh that hums with birds and insects in summer.

For my family, the story of Malloryville began even before the preserve had a name. We lived nearby along Fall Creek, itself a thread in the larger fabric of the Cayuga Lake watershed. My son and I camped for the first time on top of an esker just beyond our front door, our tent perched on what I would later learn was the remnant of a stream that once tunneled through the base of a glacier. At the time, it was simply a magical narrow ridge in the woods. Only later, with von Engeln’s guidance and the preserve’s interpretive signs, did that ridge become a sentence in a much older, longer narrative.

That is one of the great gifts of the Finger Lakes: the chance to move from simple admiration—“this is beautiful”—to understanding—“this is how it came to be.” The steep slopes along Cayuga, Seneca, or Skaneateles; the drumlin fields near the north ends of the lakes; the hanging valleys and waterfalls; and the quiet wetlands of places like Malloryville are all chapters in the same glacial chronicle. Once you learn to read one place, you begin to read them all.

Walking into the O.D. von Engeln Preserve, you enter that story at a small, intimate scale. The parking area and trailhead give way quickly to a world where the ground feels different—sometimes firm and gravelly, sometimes soft and yielding underfoot. Wooden walkways and narrow paths thread through shady forest and open wetland. Each bend offers a subtle shift: a new plant community, a change in water clarity or flow, a small sign explaining what lies beneath your feet.

Fall Creek meanders through the esker fields of the Malloryville Preserve. Here is the view from an abandoned railroad bridge. The preserve is near Freeville in the Finger Lakes Region of New York State.

This is not grand scenery in the postcard sense; it is something quieter and deeper. Malloryville invites you to slow down and notice. To ask why a particular ridge is so narrow, why water emerges here but not there, why one hollow is filled with shrubs and another with moss and sedge. In learning those answers, you gain not only an appreciation for this modest preserve but also a richer understanding of the entire Finger Lakes region.

The Trout Lily (Erythronium americanum) is named for the mottled brown leaves resembling marking on trout.

In the end, the O.D. von Engeln Preserve at Malloryville is a lens—a way of seeing. Through it, the familiar landscapes of central New York—valleys, hills, streams, and lakes—come into sharper focus as the lasting work of ice and water. Stand on an esker, look across a kettle wetland, listen to the quiet trickle of a spring, and you are standing inside the very processes that shaped the Finger Lakes.

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