Mount Shasta, a majestic stratovolcano dominating the landscape of Northern California, stands as an iconic sentinel, its snow-capped peak visible for over a hundred miles, a solitary giant rising from rolling plains. This striking isolation, reminiscent of the Lonely Mountain from J.R.R. Tolkien’s tales, has even inspired the installation of a 20-foot dragon sculpture on the northern approach, a whimsical nod to its dramatic presence. However, beneath its awe-inspiring façade, Shasta is a powerful symbol of environmental change, particularly through the dramatic retreat of its seven named glaciers, including the Whitney Glacier, the longest in California and a historical benchmark for glacial study in the continental United States.

The Whitney Glacier was first formally documented by Clarence King, who led an early U.S. Geological Survey expedition to the summit in the late 19th century. King, a preeminent geologist of his era, eloquently described Mount Shasta in The Atlantic Monthly as a "colossal cone of a burned-out volcano, springs upward from a plain… bearing upon its summit a cap of solid white." A photograph dated September 11, 1870, captures the Whitney Glacier in its more formidable state, a vast expanse of ice crisscrossed by deep crevasses, a testament to its former grandeur.

Today, however, the story of Mount Shasta’s glaciers, like those across the Western United States and indeed the globe, is one of relentless shrinkage. Glaciers, long symbols of permanence and subjects of the phrase "glacial pace," are diminishing at an alarming rate. While this diminishment may seem slow by human reckoning, appearing almost imperceptible to the casual observer, it is happening at an unprecedented speed from a geological perspective. A child growing up today might easily mistake the current, often patchy state of Shasta’s glaciers for their natural, permanent condition. Scientists refer to this phenomenon as "shifting baseline syndrome," a sobering recognition of how readily human perception adapts to and normalizes degrading environmental conditions, leading to a collective "great-getting-used-to" of loss.

Fortunately, there exists a powerful method to counter this erosion of environmental memory: comparative photography, or re-photography. For approximately 140 years, individuals have been revisiting specific vantage points to capture images of these glaciers, creating an invaluable, decades-long visual record. These re-photo projects provide irrefutable evidence of Earth’s transformation under the influence of climate change, offering a stark counterpoint to the subjective nature of shifting baselines. Even in an era saturated with digitally manipulated imagery, the enduring power of a century of photographic documentation is difficult to dismiss.

Such historical photographic archives are crucial in combating the pervasive "shifting baseline syndrome." The most effective, indeed the essential, antidote to environmental amnesia lies in the diligent preservation of history in all its forms. The initial chronicles of natural history can manifest in numerous ways: detailed journals, personal diaries, scientific field notes, evocative landscape paintings, antique maps, property records, and even mundane items like restaurant menus. The inherent danger, however, is that these vital source materials, much like the environmental features they document, can prove to be as ephemeral as the landscapes themselves, susceptible to loss, decay, or simply neglect.

Among those dedicated to preserving this vital visual history is citizen-scientist Phil Rhodes. Since the 1970s, Rhodes has meticulously undertaken the re-photography of Mount Shasta’s glaciers, amassing what is likely the most extensive private collection of such images. Now in his seventies, Rhodes, a tall, lanky, and earnest individual, cultivated his deep appreciation for the natural world during his childhood in Mill Valley, California, exploring the creeks and wild spaces around his home. His first encounter with the Whitney Glacier occurred in 1972 while he was studying geology at Humboldt State University (now Cal Poly Humboldt), an experience that profoundly captivated him. "I quickly became aware that the glaciers on Mount Shasta were acting in a very unusual manner," Rhodes recalled in a conversation, "And that led into a lot of scientific investigation as to why the glaciers were behaving the way they were."

Inspired by the book Exploring Glaciers—With a Camera, Rhodes established his inaugural photo station near the Whitney Glacier in 1974. Over time, he expanded his efforts to encompass other significant glaciers on the mountain, including the Bolam, Hotlum, and Wintun, establishing a total of fourteen distinct photographic locations. He viewed his work as a continuation of a long tradition of amateur naturalists and scientists who have contributed invaluable observations of glaciers, drawing inspiration from figures like John Muir, individuals who, while not formally trained professionals, possessed profound scientific insight and dedication.

From 1983 to 1988, Rhodes resided in the small community of Mount Shasta, dedicating his summers to serving as the caretaker for a mountain hut that acts as a staging point for climbers ascending the peak. Even after relocating to the San Francisco Bay Area to manage his family’s shipping-export business, he remained committed to his project, undertaking the arduous four-and-a-half-hour drive north, often alone, to reach his remote photo stations and meticulously document the changing glacial landscape. "What I did was try to make this definable by setting up these photo stations: taking the same photo year after year after year," he explained. "You can look at these photos, and you can see changes."

However, the demands of life eventually began to impact Rhodes’s ability to sustain the demanding re-photography project. In the early 2000s, he entrusted the endeavor to a graduate student in Portland State University’s Geology Department. Then, sometime around 2015, with the exact year proving difficult to recall for those involved, the responsibility transitioned again, this time to a group of U.S. Forest Service rangers who welcomed the diversion and the opportunity to contribute to the project.

It was through this evolving stewardship that I found myself accompanying Forrest Coots, a seasonal ranger with the Forest Service, who graciously agreed to guide me up the mountain one spring weekend to witness a photo station firsthand. Coots, who grew up in the region, possesses an intimate knowledge of Mount Shasta, his personal baseline for environmental change stretching back to his earliest memories. As we navigated the rugged backroads on the mountain’s northern flank, Coots shared a wealth of ecological observations. Born in 1981, he has witnessed profound changes in his lifetime. "I remember, as a kid, you never doubted that winter would come," he reflected. The contrast with the present is stark: "One recent winter, we went 36 days without any precipitation. Like, dry as a bone."

The dirt road eventually gave way to a sandy wash, marking the boundary of the Mount Shasta Wilderness. Donning boots and shouldering packs, we began our ascent. Unlike the well-trodden southern approach, the north side presented a largely untracked wilderness. Coots expertly guided us upward, drawing upon a combination of seasoned mountaineering instinct and his deep familiarity with the terrain, traversing gullies, avalanche chutes, and dense stands of pine, many of which bore the visible signs of stress and drought, their needles a crisp brown. Pointing towards the southeast, he indicated the Bolam Glacier, expressing grave doubt about its survival for the remainder of his lifetime. "The Hotlum—maybe. The Whitney—maybe. But not the Bolam. It’ll be gone," he stated with a somber certainty.

Emerging above the treeline, we entered a stark landscape of rock, dirt, and ice. Coots led us to a rocky ledge overlooking a small, icy pond. Above us, the Whitney Glacier flowed, its ice shimmering with a brilliant white hue and an almost digital blue in its deeper recesses. "We’re here," Coots announced, "This is the spot." It took a moment to fully grasp the significance of our location. Coots gestured to a medium-sized, salmon-colored boulder at the edge of the shelf. Photo Station Whitney #1, it turned out, was an unassuming, ordinary rock situated in an otherwise unremarkable expanse. It was a stone that could easily have been overlooked, yet for decades, it had served as a critical vantage point for observing and documenting a world in flux. The solid rock, a symbol of permanence, was now anchored by the fragile thread of human memory and a century of photographic endeavor.

During my time with Coots, I began to piece together the remarkable narrative of Mount Shasta’s comparative glacier photography project. It stands as an inspiring testament to the power of citizen science and determined individual effort, a collective attempt to resist the insidious creep of ecological amnesia. The dedication of Phil Rhodes, whom Coots rightly described as "the foremost expert on Shasta’s glaciers," in investing so much personal energy and financial resource to document these vanishing natural forces, is profoundly moving. This, I realized, is how environmental memory persists across generations: through the often-unheralded and uncompensated labor of individuals striving to preserve memories that truly matter.

Yet, the continuity of memory is not always assured. A significant portion of Rhodes’s Mount Shasta glacier photographs from 2015 to 2019 were lost when a thumb drive containing the images was misplaced, a setback that left Rhodes "distraught," according to Coots. The project’s challenges continued to mount. The summer after guiding me up the mountain, Coots departed from his Forest Service position. Responsibility for the re-photography then fell to Nick Meyers, the lead climbing and wilderness ranger for Mount Shasta. However, persistent staffing shortages and unfavorable weather conditions have hampered his team’s ability to maintain the photographic record. Meyers reported that in 2023 and 2024, they were only able to photograph "a handful" of the designated sites, missing many in 2025. While the project "hasn’t come to a halt, but we don’t always have the capacity" to visit all locations, he conveyed via email, emphasizing the agency’s continued commitment and openness to volunteer assistance. For the moment, the photo station at the base of the Whitney Glacier has reverted to its primordial state, a simple rock bearing silent witness to millennia of geological history.

Earlier, a partial collection of Rhodes’s Mount Shasta photographs had been transferred to Andrew Fountain, a distinguished glaciologist at Portland State University. However, even this transfer represented a form of evidentiary purgatory. Fountain shared that over his career, he has amassed over 10,000 glacier photographs. While some are accessible on his website, Glaciers of the American West, many remain unseen on data servers and hard drives. Although Glaciers of the American West offers a glimpse into glacial recession through comparative photography, its interface is cumbersome, navigation is difficult, and the site has not been updated in years, a situation Fountain attributes to a lack of resources, particularly in his retirement. Visiting the site’s Glacier RePhoto Project and attempting to access the Mount Shasta photo gallery results in a 404 error message, a broken link that mirrors the fading presence of the glaciers themselves. The galleries for Mount Hood and Mount Rainier suffer from similar technical issues. "I’d like to get that site going again," Fountain lamented, his voice tinged with weariness.

The question lingers: If a glacier melts from a mountainside, and there is little publicly accessible visual evidence of its existence, did it truly exist at all? Fountain confessed that for much of his academic career, he maintained an "academic remove" from such existential considerations. However, he eventually recognized that "in the near future, like maybe 2070 or whatever, glaciers will get so small that nobody will read my work." This realization led him to "a certain depression," prompting him to work with increased urgency. "In a way, frankly, it is encouraging me to work a little more feverishly, because right now what I’m doing is developing an inventory of all the glaciers in the Western U.S., trying to tie down where they all are and how big they are. It might be a map of what times used to be," he stated, driven by a desire to create a final, comprehensive record.

As Coots and I descended from the Whitney Glacier, the sound of trickling water was omnipresent. The spring melt was in full swing, sending countless freshets cascading down the mountainside. The glacier was visibly melting beneath our feet, and we were the sole witnesses to this profound transformation. Ultimately, a story, much like a glacier, remains alive only as long as it continues to move and is retold, its existence sustained by the living memory and continued engagement of those who witness its change.