An astronaut’s telephoto shot from the ISS captured Utah’s Goosenecks, where the San Juan River winds 5.5 miles to cover 1.3 miles

A crew member aboard the International Space Station photographed Utah’s Goosenecks State Park on Oct. 6 with a Nikon Z9 camera and a 400-millimeter lens, and NASA’s Earth Observatory put the frame out on Nov. 6. In the image the San Juan River doubles back on itself so many times that, in one section, it covers 5.5 miles (8.9 kilometers) of channel between two points only 1.3 miles (2.1 kilometers) apart in a straight line.

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NASA’s caption does not name the astronaut. It credits the Expedition 75 crew, with the frame archived as ISS075-E-188830 and then cropped, contrast-enhanced and cleaned of lens artifacts by staff at Johnson Space Center.

A four-to-one river in a 1,000-foot canyon

The caption, written by Earth Observatory’s Lindsey Doermann and posted on NASA’s Earth Observatory page, describes the San Juan flowing westward through the park on its way to Lake Powell. The canyon is about 1,000 feet (300 meters) deep, and in places the river nearly loops back on itself in horseshoe-shaped bends. Dividing 5.5 miles by 1.3 miles gives about 4.2, and the metric figures of 8.9 and 2.1 kilometers give the same answer, consistent with the roughly 4 to 1 ratio in the caption. Geographers call that comparison of channel length to straight-line distance sinuosity, and a value near 4 marks an unusually tight set of bends: a walker crossing the neck of land would cover in 1.3 miles what the river needs 5.5 to do. NASA pairs the orbital frame with a ground-level photograph by Bob Wick of the Bureau of Land Management, taken on Aug. 8, 2016 in golden light, and offers a 46.57-megabyte full-resolution download of the space image.

The ground view agrees. Utah State Parks says the park sits on the edge of a deep canyon above a gooseneck meander, with the river about 1,000 feet below the overlook and views that reach Alhambra Rock and the buttes and spires of Monument Valley. The Utah Geological Survey likewise describes the overlook as sitting on a precarious 1,000-foot cliff.

Entrenched meanders: how a lazy river got locked in stone

Tens of millions of years ago, NASA explains, the San Juan crossed a flat plain formed in an ancient marine environment, wandering in a pattern similar in some ways to today’s Mississippi River. Uplift of the Colorado Plateau, thought to have begun raising the river’s headwaters around 20 million years ago, steepened its gradient and sharpened its erosive power. The river then sliced down into rock roughly 300 million years old, and the bends it had made on the plain stayed put as it cut, leaving the entrenched meanders known as goosenecks.

NASA calls the plateau’s uplift history “still-enigmatic,” so the timing is an estimate with open questions behind it.

Astronaut photography and a dark-sky bonus

Crew photography of this kind has a long pedigree. NASA’s overview of astronaut photography notes that astronauts have photographed Earth since the 1960s, that the pictures helped lay groundwork for Landsat and other Earth-observing satellites, and that the Station’s Destiny laboratory window is the best optical quality window ever flown on a crewed spacecraft. The images are cataloged at Johnson Space Center and searchable through a public gateway, run by the Earth Science and Remote Sensing Unit, which also handles the Goosenecks frame.

The equipment has changed over the program’s life. NASA’s overview says early Station expeditions used 70- and 35-millimeter film cameras and electronic still cameras, whereas this frame came from a Nikon Z9 digital body, one of the cameras now carried aboard.

A 400-millimeter lens lets a crew member isolate a single canyon system from a vantage point hundreds of miles up, which is what makes the bends read as a graphic S-curve instead of a speck in a wider landscape.

The overlook itself puts Monument Valley’s buttes and spires on the southwestern skyline, so a single stop combines the entrenched river below with one of the best-known landscapes in the Southwest. Visitors can stay on site: the Utah State Parks page lists a primitive campsite with fire pits, picnic tables and vault toilets, with reservations made through the state park reservation system. It points to a separate fee page, which was not checked here.

The location has another claim to fame. DarkSky International designated Goosenecks State Park an International Dark Sky Park in 2021, according to NASA, and Utah State Parks lists the same status. From the park the unaided eye can pick out the Double Cluster in Perseus and the Messier 24 star cloud in the Sagittarius arm of the Milky Way. NASA adds that the Northern Taurids, Southern Taurids and Leonids meteor showers all peak during November 2026. The Utah State Parks page also carried a notice, when checked on Nov. 8, of a temporary closure of State Route 163 between mile markers 41 and 25 because of flooding, with detours posted, so travelers should confirm conditions before heading out.

This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.

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