It happened just before dawn. The murmur of bat wings fluttered above me, somewhere within earshot. I lay among the rocks and realized, not for the first time, that my camera was wildly insufficient. In the moonless, inky hours before the sunlight creeps back in from the east, there is very little to see. All I could do was listen to these sightless fliers feeding above me in the stillness.

Having spent my career working as a photographer in remote, hard-to-reach areas, it took me nearly two decades to fully realize that the least appreciated and often the hardest gems to document are not the vistas I chase with still cameras, but the auditory elements that surround them. It was that blanket of calm—layered with the notes of wind, wings and scampering claws—that remained with me long after my pixels were processed.

Markarfljot River, Iceland
Although Iceland draws more than two million visitors a year, the population is a mere 357,000, and some 80 percent of the country is uninhabited. It’s not hard to escape to the wild. The rushing, gurgling sounds of glacial rivers provide an especially valued tonic. The Markarfljot River is fed by the Myrdalsjokull and Eyjafjallajokull glaciers, and flows 60 miles to the Atlantic. It’s one of many displays of energy and power that give Icelanders a deep reverence for nature. Pete McBride
Markarfljot River, Iceland. Miles from nearest: Airport: 93, Keflavik International Airport. Major road: 11, Route 1. Gas station: 19, Orkan. Grocery store: 19, Kronan

On one assignment, involving a 750-mile trek through the entire length of the Grand Canyon, I’d set out to create a visual inventory of the wilderness, but after some 500 thirsty, thorny miles, I starting craving not more lenses but a better microphone. I wanted to capture the choir of croaking frogs, the rare applause of rain on rock, the hum of tarantula hawks, the echo of lambs bleating, the wind carrying a change in weather. It was all such a marked contrast from the usual noises that engulfed my life at home: traffic, trucks, lawn mowers, airplanes, construction sounds, portable music beats, my phone buzzing.

My craving led me to Gordon Hempton, a self-described acoustic ecologist. Hempton has spent nearly four decades capturing what he calls the planet’s “jukebox” of natural sounds. He has recorded the music of insects and owls, mountain ranges and jungles, the rustling of prairie grasses and the echoing vibrations inside a log of Sitka spruce.

Majete Wildlife Reserve, Malawi
People tend to think of elephants, with their enormous bulk and trumpetlike calls, as loud beasts. In fact, their footsteps are surprisingly stealthy, and their habitats reverberate with sounds unheard by us. Much of their communication takes place between 1 and 20 hertz, low frequencies out of range of the human ear. But those signals help herds keep in touch with each other over distances as great as six miles. Elephants perceive these vibrations not through the air but through the soles of their padded feet. Pete McBride
Majete Wildlife Reserve, Malawi. Miles from nearest: airport: 28, Chileka international Airport. Major road: 13, M1. Gas station: 13, Puma Filling Station. Grocery store: 26, People's Supermarket.

Hempton uses the word “silence” to describe what he’s after, even though he isn’t seeking a vacuum. He’s looking for the soundscapes that emerge when human noise disappears—antidotes to the din of a mechanical, beeping world.

“Silence is the think tank of the soul,” Hempton told me softly during a Skype interview earlier this year. “All religions share and revere silence.” He warned that quietude “is and has been on the road to extinction for a long time.”

Graham Land, Fish Islands, Antarctica
When winds subside on the Fish Islands—the part of the continent closest to the tip of South America—there are moments of blissful peace, interrupted only by the occasional seal, Gentoo penguin or skua bird. Nonetheless, the industrialized bustle of far-away lands is becoming increasingly evident, perhaps even heard in the trickle of meltwater. The nearby Antarctic Peninsula is facing some of the highest temperature increases on the planet. The area has lost 163 billion tons of ice each year since 2002. Pete McBride
Graham Lake, Fish Islands, Antarctica. Miles from nearest: Airport: 731 Ushuaia Airport, Argentina. Major road: 732, Route 3, Argentina. Gas station: 730, YPF Service Station, Argentina. Grocery store: 716, Supermercado, Argentina

He has the data to prove this. In 1984, after Hempton had spent some years chasing silence, he identified 21 places in his home of Washington State (an area of 71,298 square miles) that were free of human-made noise for intervals of 15 minutes or longer. In 2007, Hempton reported that only three of those places on his list still fit that criterion. Today, he believes a natural silence longer than 15 minutes is rare in the United States and all but gone in Europe. Even remote wilderness areas and national parks are frequently crisscrossed by jets, shrinking the average noise-free interval to less than five minutes during daylight hours.

Aerial view of the Colorado River delta, in Baja/Sonora, Mexico. Its natural sounds have been muted and replaced by the distant sounds of agricultural machinery and dogs. Pete McBride
Morning mist shrouds a lake in Botswana. Every sound in the region is related to wildlife movement and activity. Pete McBride
A 200,000-strong king penguin colony on the sub-Antarctic island of South Georgia. Near dusk the chorus of coos and cries quiets down. Pete McBride
A flamingo takes flight from a lake on the Atacama Desert after waiting for its legs to be released from ice of a morning freeze. Pete McBride
The Ganges River winds south out of the foothills of the Himalayas through smog that blows north from New Delhi. Pete McBride
The sounds of water and glacial till rumble and percolate between the hiss of wind in Iceland. Pete McBride

This noise pollution is harming animals. A study last fall at Queens University Belfast found that human-made sounds threaten the feeding, migration and communication of more than 100 species of mammals, birds, fish, reptiles and amphibians. But noise pollution is also bad for our own health. It can lead to high blood pressure, heart disease, heart attacks, stress and insomnia. In 2011, the World Health Organization concluded that 340 million Western Europeans (roughly equivalent to the U.S. population) lost at least one million years of healthy life each year because of traffic-related noise.

Quietude, though, has been shown to promote the regeneration of brain cells in the hippocampus, which is key for learning, memory and emotion. Preliminary findings also suggest that it can be therapeutic for certain types of depression and dementia.

Salar de Uyuni, Bolivia
Perched at nearly 12,000 feet, this salt flat is the largest in the world. The ancient lake bed spans 3,900 square miles, so featureless that geophysicists have compared it to an ocean with no waves. While the visual expanse can be overwhelming, the silence is equally striking. The flats are visited by breeding flamingos and bands of salt miners, but they remain relatively untrammeled. That might change with growing global demand for batteries: Major lithium reserves are believed to lie under the salty surface. Pete McBride
Salar de Uyuni, Bolivia. Miles from nearest: Airport: 54, Joya Andina Airport. Major road: 44, Route 30. Gas station: 55, Estacion de Servicio. Grocery Store: 55: Supermercado Exito

Hermits, writers and philosophers who sought solitude in the woods may have been on a more medicinal path than we’ve given them credit for. “Silence is the universal refuge, the sequel to all dull discourses and all foolish acts,” wrote Henry David Thoreau, the 19th-century transcendentalist, as he recorded natural sounds with the best microphone he had available: a pen.

Whenever I come back from an assignment documenting a quiet corner of the earth, I often notice how much clearer my mind feels. The quandaries of life seem simpler, my attention a tad sharper. Even after I reacclimate to the higher decibels of modernity, it feels as if the medicine of silence has eased my mental noise.

Photographs From the Last Quiet Places on Earth
On the south side of Mount Everest, sherpas build a route each climbing season. These men—known locally as the Khumbu icefall doctors—say that in order to create the safest passage, they listen to the ice creak, whine and moan. At the top of the icefall, between Camps 1 and 2, is an area known as the Valley of Silence. At nearly 20,000 feet, it’s famous for its tranquility. But the steepness of the slope, and the constant rise and fall of temperatures, make the valley prone to roaring avalanches. Pete McBride
Valley of Silence, Khumbu Icefall, Mount Everest, Nepal. Miles from nearest: Airport: 95, Tribhuvan International Airport. Major road: 41, China National Highway 318. Gas station: 22, Ambari Indane Gramin Vitrak. Grocery Store: 16, Kiran Shopping Center

This became ever more noticeable during the early months of the Covid-19 pandemic when there were significant drops in tourism and travel, and industrial lockdowns. While many commented on the hushed tones of neighborhoods and the increased awareness of bird sounds again, a report in the journal Science reported that the lockdown was “the longest and most coherent global seismic noise reduction in recorded history.”

A photo composite captures a day of air traffic in and out of Aspen, Colorado, after a July 4th weekend. Pete McBride
A photographic composite captures a day of helicopter traffic—363 flights—in the western Grand Canyon. Pete McBride
A time-lapse photo of planes crisscrossing the night sky in a renowned wilderness area in Colorado. Pete McBride

The images on these pages are some of my visual meditations on the sounds and silences of nature from throughout the years. They are the backdrop to the Khumbu lullaby of Mount Everest’s glaciers moving underfoot, the distant rumble of an elephant. They document the deep stillness in the basement of the Grand Canyon or the thin-air emptiness of the Altiplano’s ancient lakebed of the Salar de Uyuni. I hope these photos can serve as reminders of what the natural world has to tell us—if we listen.

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