Great Basin National Park

Listen for a moment. Up here, the wind moves through the pines with a dry, steady hiss, and there is very little else. The air is thin and cool, even in summer. It smells of sage from the valley below and sharp resin from the trees around you. The ground underfoot is loose, broken rock, pale grey and cold to the touch. You are standing in one of the quietest corners of the American West.

This is Great Basin National Park, in White Pine County, on the eastern edge of Nevada, close to the Utah border. The nearest town is the small community of Baker. The park takes its name from a much larger landscape. The Great Basin is a vast region of the American West where rivers and streams have no outlet to the sea. Rain and snowmelt flow inward. Water collects in lakes and sinks, or it simply evaporates under the desert sun.

Here is the first thing most visitors miss. The Great Basin is not one big bowl. It is a series of long, parallel mountain ranges with flat valleys between them, repeated again and again across the map. The range you are standing in is the Snake Range. From the valley floor, these mountains rise like islands out of a sea of sagebrush. Biologists often call them sky islands, because plants and animals on the high slopes live in near isolation from the next range over.

The highest point in the park is Wheeler Peak, at about 3,982 metres. It is the tallest mountain that sits entirely within Nevada. On a clear day you can see its bare, rocky summit from far across the valley. A paved scenic drive climbs from the desert floor toward the peak. As you drive up, you pass through several distinct zones of life — from sagebrush, to pinyon pine and juniper, to aspen and fir, and finally to the high, wind-scoured slopes near the tree line.

That climb matters. In a single morning, you can travel through a range of climates that would normally take a long road trip to see. The temperature drops as the road rises. The light changes too. Down in the valley it can feel hot and hazy. Up high, the sky turns a deep, hard blue, and the shadows become sharp and dark. Many visitors pull over simply to breathe, because the altitude takes some getting used to.

Now for the trees that make this park famous among scientists. On the high, rocky slopes near Wheeler Peak grow Great Basin bristlecone pines. These are among the oldest living things on Earth. Some individual trees here are thousands of years old. They grow very slowly, in poor soil and harsh wind, and that slow growth makes their wood dense and resistant to rot. A bristlecone can stand dead for centuries without falling.

Look closely at one of these trees, and you will see why people stop and stare. The trunks twist into spirals. Much of the bark is often stripped away, leaving smooth, polished wood in shades of gold, rust and silver. Often only a narrow strip of living bark feeds a few green branches. The rest of the tree has died back, which lets the survivor conserve its resources. It is a strategy for lasting a very, very long time.

This mountain also holds a sad story. In 1964, a researcher studying ancient climate received permission to cut down a bristlecone on Wheeler Peak. Later, when its rings were counted, the tree turned out to be nearly 5,000 years old. It had been one of the oldest known living trees in the world. People had nicknamed it Prometheus. The loss caused public dismay, and it helped build support for protecting this landscape as a national park, which finally happened in 1986.

Below the mountain, there is a different world entirely. Lehman Caves sits near the park's main visitor area. Despite the plural name, it is a single cave system. It formed in marble, which is limestone that heat and pressure changed deep underground. Over long ages, water slowly dissolved passages in the rock. Then dripping water began to leave behind minerals, and those minerals built the formations you see today.

The cave is named after Absalom Lehman, a local rancher and miner who began showing it to visitors in the late nineteenth century. Long before that, Indigenous peoples knew this land well. The cave was protected as a national monument in the early twentieth century, decades before the wider park existed. Inside, it is cool and damp all year. The air feels still, and the only sounds are footsteps and the occasional drip of water.

Here is the second surprise. Lehman Caves is known for unusual formations called shields. A shield is a pair of flat, round discs of stone that grow out from the wall or ceiling, a little like two plates pressed together. Scientists still debate exactly how they form. This cave contains a large number of them, which is rare. You will also see stalactites hanging from the ceiling, stalagmites rising from the floor, and delicate, curtain-like draperies.

When the sun goes down, the park offers one more gift. Because it is so remote, far from large cities, the night sky here is extremely dark. Great Basin has been recognised as an International Dark Sky Park. On a moonless night, the Milky Way stretches overhead as a pale, textured band. Planets look steady and bright. Rangers often host astronomy programmes, and many visitors say the stars alone were worth the long drive.

So take one more look around before you move on. Notice how far you can see, and how few signs of people there are. Notice the colour of the rock and the shape of the nearest tree. As you walk away, listen again for that wind in the pines. It has been moving across these slopes for longer than any of these ancient trees have stood here... and it will keep moving long after you leave.