The mine Magna
The largest excavation people have made, and how to see it
The Bingham Canyon Mine, and how you actually get to look at it
You cannot see the pit from Magna, and there is no road to it over the mountains behind town. The Bingham Canyon Mine sits on the far side of the Oquirrh range, now roughly two and a half miles across and a little under four thousand feet deep, still worked around the clock, and the one public way to look into it is a six dollar shuttle from Herriman. Here is the mine measured properly, the night in April 2013 when a wall came off, and exactly how the visit works.
The short answer
You cannot see the Bingham Canyon Mine from Magna, and there is no road to it across the mountains behind town. The pit sits on the far side of the Oquirrh range, and the one public way to look into it is the Rio Tinto Kennecott overlook, reached by shuttle from a visitor center in Herriman, round the south end of the range. As of 2026 it is open: tickets are six dollars a person, booked online ahead, and the visit runs on a morning schedule, with the last shuttle up at 2:30. Access here has opened and closed over the years, so it is worth a quick check with the operator before you drive out.
The mine in numbers
2.5 mi
across at the rim, the largest excavation people have made
4,000 ft
from the rim down to the floor of the pit
2,104
people work the Kennecott operation
6 dollars
a ticket to the overlook, under fives free
How big it is
A hole measured in thousands of feet, on the far side of the hill behind town
Magna exists because of what comes out of this pit. Large scale copper mining took hold at the head of Bingham Canyon in the early 1900s, and the town at the foot of the range grew from 1906 to serve the works that process the ore. More than a century later the pit is the largest excavation human beings have made anywhere: roughly two and a half miles across at the rim and a little under four thousand feet from rim to floor, cut in terraced benches that spiral down the walls.
It is not a monument, and it has never stopped working. The pit is one part of a Rio Tinto copper operation that runs around the clock, alongside a concentrator, a smelter that is one of only two operating copper smelters left in the United States, a refinery, its own rail and a tailings storage facility. The operation employs 2,104 people and produced 133.6 thousand tonnes of refined copper in 2025, with gold, silver, molybdenum and tellurium coming out alongside it.
The part most people get wrong is where it is. The range fills the whole southern skyline of Magna, so the natural assumption is that the pit is right up there behind the houses. It is not. The excavation is cut into the eastern face of the mountains further south, and the only public place to look into it is an overlook reached from a visitor center on Bacchus Highway, round the far south end of the range. From Magna that is a drive around, not a drive up.
The 2013 landslide
10 April 2013, and why the pit was empty when the wall came down
The most dramatic thing to have happened inside this pit is the 2013 Manefay landslide, and it is usually told as a disaster. It is more accurately an engineering and monitoring story. The northeast wall had been watched on geotechnical instruments since November 2012, and through early 2013 the movement sped up. When it reached about two inches a day, the mine cleared every worker out of the pit on the morning of 10 April and, that afternoon, told the public that a slide was coming.
It came that night. The wall failed in two movements about ninety minutes apart, roughly 145 million tons of rock in total, big enough that a small earthquake registered minutes after the second one. Because the pit had already been emptied on the instrument readings, no one was in it. That is the part worth remembering: a round the clock operation stopped itself, on the numbers, hours before the mountain moved.
The slide in numbers
The 2013 slide is also why the visitor experience you can book today is not the one that existed before it. The old visitor center stood where the slide made it unusable, public access was suspended for years, and what eventually returned is a different facility on a different site. That is the practical reason the address on your ticket is at the south end of the range rather than anywhere an older guidebook would send you, and part of why access here can change from one season to the next.
Still a working mine
A working operation, with a closing date that keeps moving
It is easy to read a hole this size as a finished thing. It is not. The pit anchors an integrated copper business that mines, concentrates, smelts and refines on site, employs 2,104 people, and produced 133.6 thousand tonnes of refined copper in 2025. Copper is the headline; gold, silver, molybdenum and tellurium come out alongside it.
The mine's life has been pushed out repeatedly, and each extension has been a major investment rather than a gesture. Work now approved carries the operation to 2032, and a further expansion, if it is approved, would take it toward 2040. For a town whose whole existence sits downstream of this pit, the difference between a mine that closes in the 2020s and one that runs into the 2040s is not an industrial statistic. It is the shape of the next twenty years.
Two recent moves change what the operation looks like from the valley rather than only what it produces. A fifteen year agreement for 78.5 megawatts of wind power was signed in November 2025, and a new 25 megawatt solar plant came online in January 2026, taking solar on the site to 30 megawatts. A copper business runs on an enormous amount of electricity, so where that electricity comes from is one of the more consequential things happening here.
The pit is the only thing in this valley whose closing date has been pushed back more often than it has been met.
How to visit
Six dollars, a shuttle, and a morning window that closes at 2:30
Looking into the pit means one thing: the Rio Tinto Kennecott overlook, on a ticket and a shuttle. This is access inside a working industrial site rather than a public park, so the rules are the operator's, and they are worth reading before you book. Here is how it works as of 2026.
Planning the visit
Prices, hours and rules change from year to year, so confirm with the operator before you travel.
Do not try to reach the mine over the mountains from Magna. There is no public road across the Oquirrhs from town to the pit, and much of the high ground behind Magna is mining property or otherwise private rather than a trail network. The one paved canyon road at the south end of the range is a seasonal drive that belongs to another town, and it does not reach the overlook either. The only way in is round the south end of the mountains to the visitor center in Herriman.
Seen from Magna
Not the pit, but the other end of the same operation
From inside Magna you never see the excavation. What you see is the processing end: the works on the north side of town and the smelter stack above them, which is the tallest thing on this part of the valley and the landmark local directions are given from. Ore travels from the pit to that side of the operation, which is exactly what the town was built to serve and the reason the streets sit where they do.
None of it is open to visitors. It is a private, working industrial site with rail movements and a fenced perimeter, so looking at it from a public road is the whole of what is available. It is a landmark rather than an outing. If you are weighing an address near it, the honest homework, including what the streets closest to the works are like block to block, sits on the Magna city guide rather than here.
What this page is for is the pit and the ticket. If you want the range as a single subject, with the bench towns strung along its foot, that is the Oquirrh side page. And if you want the town the copper built rather than the hole it came from, the Magna Main Street page covers the old grid, a short walk from anywhere in it.
Scott Buehler
Moving Utah About Scott
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Read the pageQuick answers
The mine, answered
You visit through the Rio Tinto Kennecott overlook, on a ticket you buy online ahead of time. The visitor center is at 12732 Bacchus Highway in Herriman, round the south end of the Oquirrh range, and every visitor rides a shuttle from there up to the rim; there is no private driving to the overlook. As of 2026 it is open every day including holidays, from 9:30am to 2:30pm, with shuttles every thirty minutes and the last one leaving at 2:30 and back by 4:00. Access here has been suspended before, so it is worth confirming with the operator before you go.
Six dollars a person, with children under five free, and the operator puts the proceeds toward its charitable foundation. Tickets are bought in advance online and are limited, so a same day ticket at the gate is not guaranteed. If your plans change you can usually move to another time slot up to an hour before, rather than count on a refund.
The town exists because of the mine, but the pit itself is not in Magna, and there is no route to it from town. The excavation is cut into the eastern face of the range further south, and the public overlook is reached from Herriman, round the south end of the mountains. What sits at Magna is the processing end of the same operation, on the north side of town, and that is a private industrial site rather than anything you can visit.
Roughly two and a half miles across at the rim and a little under four thousand feet from rim to floor, worked in terraced benches that spiral down the walls. It is the largest excavation human beings have made. The scale is the reason photographs of it never quite work: the haul trucks on the benches read as toys until you learn how big one is, and then the whole picture reorganizes itself.
On 10 April 2013 the northeast wall of the pit came down in two movements known as the Manefay slides. Instruments had shown the wall moving since November 2012, and when the movement reached about two inches a day the mine cleared every worker out of the pit that morning and warned the public that afternoon. The wall failed that night in two movements about ninety minutes apart, roughly 145 million tons of rock in all. Because the pit had already been emptied, no one was in it.
Ore production resumed within seventeen days, which is the figure that surprises people most. The slide buried three of the operation's thirteen shovels and fourteen of its hundred haul trucks, and a replacement haul road took seven months to build. The old visitor center was lost to the slide as well, which is why public access was suspended for years and eventually returned on a different site.
Fully, and around the clock. The pit anchors an integrated copper business covering the mine, a concentrator, a smelter that is one of only two operating copper smelters in the United States, a refinery, rail and tailings storage, employing 2,104 people and producing 133.6 thousand tonnes of refined copper in 2025. Work now approved carries the operation to 2032, and a further expansion, if approved, would take it toward 2040.
No. There is no public road across the range from Magna to the pit, and much of the high ground behind town is mining property or otherwise private rather than a trail network. The one paved canyon road at the south end of the range belongs to another town, is a seasonal drive, and does not reach the overlook in any case. The only way to the overlook is round the south end of the mountains to the visitor center in Herriman.
About an hour on site, which is what the operator gives as a typical visit and is about right for a self guided overlook plus two levels of exhibits. The bigger budget is the driving. From Magna the visitor center is round the south end of the range rather than over it, so give yourself time both ways, and remember that the last shuttle up leaves at 2:30.
A town built downstream of a hole you cannot see from it
Living beside an operation of this scale is a fair question and it deserves a fair answer rather than either a brochure or a scare. The documented record on the works, the rail and the streets nearest them sits on the city guide, and how much of it you would actually notice varies enormously from block to block in a town this small. Tell me which blocks you are weighing and I will make the introduction to a Salt Lake County partner agent who can go and stand on them. The numbers and the lending side stay on my desk.
Or call Scott: (435) 357-4345or send Scott a message
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