Posted on 11/14/2025 4:54:16 PM PST by SunkenCiv
The Mojave Megaphone, sometimes called the Sentinel Enigma, has been a mystery for decades. It sits high on a rocky ridge in one of the most remote parts of the Mojave Desert. This odd, welded-steel structure looks out over the empty landscape, and no one knows who built it or why.
Some people wonder if it was part of a railroad warning system, a military sound monitor, or a surveying tool lined up with desert landmarks. Others even believe it might have been used to communicate with UFOs.
But a rare clue from a 1990 Desert Dispatch newspaper article may finally shed light on the truth, suggesting it wasn’t a megaphone at all, but something far more unusual... a massive desert drum, powered by a generator and carried up the mountain by hand.
Join us as we explore the ruins of Crucero, hike to the Megaphone itself, and separate fact from desert legend in one of California’s strangest modern mysteries. The Strange Mystery of the Mojave Megaphone | 17:31
Sidetrack Adventures | 296K subscribers | 218,607 views | November 12, 2025
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--> YouTube-Generated Transcript <-- 0:00 · Hey everyone, welcome to Sidetrack 0:01 · Adventures. This is Steve. 0:04 · We are deep in the Mojave Desert, a 0:07 · place filled with strange stories and 0:09 · forgotten relics. And today we're going 0:12 · to be visiting one of the weirdest of 0:13 · them all, the Mojave Megaphone. 0:17 · Nobody knows who built it, and nobody 0:19 · knows why it's there. Some say it's art, 0:23 · others think it's a leftover from a 0:25 · secret military experiment, and a few 0:27 · believe it is something else. entirely. 0:33 · We are starting out today between 0:34 · Barstow and Baker near the entrance to 0:37 · Aftton Canyon. 0:43 · This is the entrance to Aftton Canyon 0:45 · off in the distance 0:48 · and traveling under the bridge here is 0:51 · the historic Mojave Road. 0:54 · But we're going to be pretty much 0:55 · heading in this direction following the 0:57 · railroad tracks for a while. 1:07 · In just a minute, we'll get away from 1:09 · the actual tracks. We don't really want 1:11 · to be driving here when a train shows 1:12 · up. 1:15 · This is the Union Pacific line, but it 1:17 · was originally the Los Angeles and Salt 1:19 · Lake Railroad. 1:22 · But the reason we're traveling out here 1:24 · today, the Mojave Megaphone, also known 1:28 · as the Sentinel Enigma, 1:30 · has puzzled travelers for decades. 1:33 · Perched high on a lonely ridge, it 1:36 · stares silently across one of the most 1:37 · remote stretches of desert in 1:39 · California. 1:41 · No one knows exactly who built it, why 1:43 · it's here, or what purpose it once 1:46 · served. 1:50 · As we'll see, this thing is pretty 1:52 · remote and not exactly easy to get to. 1:58 · Whoever put it there went through a lot 2:00 · of effort. And that's part of what makes 2:02 · it so mysterious because getting it out 2:05 · here was no easy task. 2:14 · This is the first train we've seen since 2:15 · we've been out here. The railroad tracks 2:18 · kind of cut the desert in half as there 2:20 · aren't a lot of good places to get from 2:22 · one side of the tracks to the other. 2:26 · You may have to go miles in either 2:28 · direction to find a crossing. 2:34 · And when there's a rare crossing that 2:35 · goes over the tracks, some of these 2:38 · trains are quite long and you could be 2:40 · waiting for a while to get to the other 2:41 · side. 2:48 · Luckily for us though, we don't need to 2:50 · cross the tracks today. We'll be staying 2:51 · on the south side of them. 3:02 · But speaking of the railroad, the 3:03 · railroad actually ties into one of the 3:05 · theories about what the Mojave Megaphone 3:07 · might be and why it's out here in the 3:10 · first place. 3:12 · Some people have theorized that the 3:14 · Mojave Megaphone was actually built for 3:17 · the railroad. 3:21 · According to this theory, trains 3:24 · carrying hazardous chemicals or fuel 3:26 · would pass near here, and the Mojave 3:28 · megaphone might have been used to 3:30 · project a siren, a signal that a 3:33 · dangerous train was on its way, or that 3:35 · a spill had occurred somewhere down the 3:37 · line. 3:43 · But here's the problem. No records of 3:46 · such a system exist. And as we'll see 3:48 · when we get out to it, the structure 3:51 · doesn't match any known design for 3:52 · railroad sirens. 3:55 · Plus, it really isn't that close to the 3:57 · railroad. You'd think if it was a 3:59 · warning, they'd put it closer. 4:07 · My guess is it's probably not a warning 4:08 · horn, but something else entirely. 4:17 · We've just come to a spot where you can 4:18 · see the road had been paved at one time. 4:26 · This is called Crusero, and this is 4:28 · where the Union Pacific and the Tonapa 4:30 · and Tidewater railroads met. 4:36 · For a while, there was a small town 4:37 · here. It had a post office, a telegraph 4:40 · station, and a few hearty people who 4:43 · called this blistering outpost home. But 4:46 · when the Tonapawa and Tidewater shut 4:48 · down in the early 1940s, the trains 4:51 · stopped meeting here and the town died. 4:56 · And looking around, there's not much 4:57 · evidence that anything was ever here. 5:00 · Though some of these streets are still 5:02 · labeled on the map, such as Main Street 5:04 · and First Street, 5:09 · but other than this grid of roads in the 5:11 · middle of nowhere, you would never guess 5:14 · a town was right Here. 5:39 · There are a few cement blocks over here. 5:42 · probably what's left of the railroad 5:44 · sighting for the Tonopah and Tidewater. 5:48 · Maybe this sign could give us a little 5:49 · bit more information, but I don't think 5:52 · we'll be reading it today. 5:59 · But you can still make out the old 6:00 · railroad bed here. 6:05 · I looked to see if I could find any 6:07 · photos of the old sighting here, but 6:09 · unfortunately I wasn't able to find 6:10 · anything. 6:15 · You can see the Union Pacific line here. 6:17 · After the Tonopon and Tidewater crossed 6:19 · the Union Pacific, it would continue 6:21 · south from here. And its southern 6:23 · terminus was the town of Lello, 6:27 · which isn't too far from here. I believe 6:29 · there were only two or three other stops 6:31 · between here and Lello. 6:35 · But since this was the intersection of 6:36 · two major railroads, as you could see, 6:38 · this was a pretty big sighting here. 6:42 · But we need to head a little bit further 6:44 · south to those mountains in the 6:46 · distance. 7:19 · And we finally arrived. There it is up 7:22 · on the hill up ahead. 7:24 · The mysterious Mojave Megaphone. 7:34 · Let's go ahead and climb up and get a 7:36 · closer look at it. 7:41 · There is some sort of cross over here. 7:43 · Looks like it says JFW and dirt bag 7:46 · crew. 7:52 · It looks like there's a little bit of a 7:53 · trail here. 7:57 · As you can see, it's not exactly easy to 7:59 · get up there, which just adds to the 8:01 · mystery. 8:04 · Getting back into the theories of what 8:07 · this could be, this part of the Mojave 8:10 · has seen just about every kind of 8:11 · testing you can imagine. Weapons 8:14 · testing, flight experiments, even secret 8:17 · training grounds going back to World War 8:19 · II. 8:21 · Some people think this megaphone might 8:24 · have been an acoustic monitor, maybe 8:27 · something to measure shock waves from 8:28 · explosions or the sonic booms of test 8:31 · flights. 8:35 · Others think it was used to relay 8:36 · warning sirens across the desert, maybe 8:39 · part of an early warning network for 8:41 · chemical weapons testing. 8:44 · As we saw with Crusero, that settlement 8:47 · was there until the 1940s. So, if there 8:49 · was some sort of World War II era 8:52 · testing going on, there was a settlement 8:54 · not too far from here. 8:58 · To me, that all sounds far-fetched. 9:02 · But then again, so does a giant metal 9:05 · megaphone bolted to a mountain in the 9:07 · middle of nowhere. 9:14 · Whoever carried it up here had to carry 9:17 · it over this kind of terrain. 9:20 · And each section of it weighs over 300 9:23 · lb. 9:30 · As far as this thing having something to 9:32 · do with the military, there's no 9:34 · paperwork, no photos, and no sign the 9:37 · military ever had anything right here. 9:42 · So, another idea is that this is some 9:44 · kind of survey or signaling device. 9:49 · If you look at old maps, this ridge 9:52 · lines up almost perfectly north to 9:54 · south. 9:57 · Though, it doesn't look like the rocks 9:58 · that it's bolted to line up the same 10:00 · way. 10:07 · I just checked. It's about 15 degrees 10:10 · off north to south. 10:19 · But looking inside the megaphone, 10:22 · there's a metal crossbar that almost 10:24 · looks like a sight. 10:38 · Here you can see the welding job on this 10:40 · thing. Not exactly the best welding ever 10:43 · done. And the two halves are bolted 10:46 · together. 10:53 · And here we can see where the megaphone 10:55 · is bolted into the boulders. 11:06 · Some people think this might have been 11:07 · used as a fixed point for a 11:09 · triangulation or to mark a boundary, but 11:13 · nobody's ever been able to figure out 11:14 · what it's supposed to line up with. 11:32 · And of course, there are some people who 11:34 · take the mystery even further, saying it 11:37 · was built to send or receive signals 11:40 · from UFOs. 11:47 · I would hope that aliens who could 11:49 · travel across the stars could do a 11:51 · better welding job than this though. But 11:53 · then again, who are we to understand the 11:55 · minds of aliens? 12:06 · It looks like unfortunately some people 12:08 · have shot the Mojave megaphone as well. 12:16 · If nothing else, there is a pretty great 12:18 · view from up here. But then again, when 12:21 · you're up here and you see all this 12:23 · emptiness, 12:25 · you know there is no way this was a 12:28 · siren to warn anyone of anything because 12:31 · there is no one around here to warn. 12:43 · This area is just so remote and even the 12:46 · railroad and the old settlement of 12:48 · Crusero are miles from here. 13:00 · Another thing working against a lot of 13:02 · the theories out there about the 13:04 · megaphone is it doesn't seem to be as 13:06 · old as people think. 13:10 · The mystery itself wasn't even really 13:12 · known until the early 2000s. 13:16 · Desert magazine, which famously covered 13:18 · everything big and small in the Mojave, 13:22 · doesn't appear to have ever even 13:23 · mentioned the megaphone before it 13:25 · stopped publishing in 1985. 13:29 · A mystery like this doesn't seem to be 13:32 · something they would have overlooked. 13:44 · In my research, I tried to find the 13:46 · earliest possible mention of the Mojave 13:48 · Megaphone that I could find. And the 13:50 · farthest back that I was able to find 13:52 · anything was 1990. 13:55 · And this is where if you want the Mojave 13:57 · Megaphone to remain a mystery to you, 14:00 · you should probably stop watching. 14:03 · Long before anyone had called this the 14:05 · Mojave Megaphone, in December 1990, the 14:09 · Desert Dispatch newspaper in Barstow, 14:11 · California, printed an article titled 14:14 · Mojave Desert Holds Many Secrets, and 14:17 · one of those secrets was called The 14:20 · Drum. 14:24 · The article goes on to quote a Bureau of 14:26 · Land Management ranger who states that 14:29 · he had met the maker of the drum, what 14:31 · is now called the Mojave Megaphone, a 14:34 · year earlier and that he brings up skins 14:36 · to make drum heads and wires it to a 14:39 · generator powered amplifier. 14:46 · The article also confirmed that this was 14:48 · brought up by hand, which certainly 14:51 · shows some dedication. 14:57 · Unfortunately, the article doesn't 14:59 · mention the creator's name, but unless 15:01 · the ranger was making up the story for 15:03 · whatever reason, it appears that this 15:06 · was built to be a drum. 15:10 · Why this spot was chosen and why they 15:12 · did it is still a mystery. But at least 15:15 · despite what the History Channel might 15:17 · say, we could be pretty sure that aliens 15:20 · didn't build this. 15:30 · And if we bang on it, we can see how it 15:32 · would make a pretty good drum or a bell. 15:46 · While the Mojave Megaphone probably 15:48 · wasn't part of a secret military 15:49 · experiment, a railroad warning system, 15:53 · or a device to communicate with aliens, 15:55 · it still remains a fascinating mystery. 15:58 · Considering the effort it took to build 16:00 · it and place it here, and the fact that 16:03 · its creator has stayed anonymous ever 16:04 · since, 16:06 · it's still one of the most intriguing 16:08 · sites in the Mojave. 16:22 · Of course, after saying that, I don't 16:24 · know how well it shows up on the camera, 16:26 · but almost directly in line with the 16:28 · Mojave Megaphone, there is something in 16:31 · the distance that looks to be man-made. 16:33 · So, I guess real quick, we have to go 16:35 · check that out. 16:48 · We've made it to the area where it 16:50 · looked like there was something man-made 16:51 · that the Mojave megaphone was pointing 16:53 · to. The Mojave Megaphone is back in this 16:56 · direction. 16:58 · And when we turn around here, yeah, 17:00 · there was something man-made here. There 17:03 · is a tractor with a no trespassing sign 17:05 · and some trailers. 17:12 · Well, unless the builder of the Mojave 17:14 · Megaphone knew that in the future 17:16 · there'd be a tractor and some trailers 17:18 · here, I don't think it's pointing to 17:20 · anything. So, that's our look at the 17:23 · mystery of the Mojave Megaphone. Thank 17:25 · you so much for watching. If you enjoyed 17:27 · the video, please give it a thumbs up, 17:28 · consider subscribing, and we'll see you 17:30 · next
He's no Desert Drifter, but he puts together some interesting videos.
I miss ol Art Bell
LOL, he is sort of a Youtube Huell Howser. Without the “That’s amazing!”
Hey, maybe this isn’t a megaphone, maybe it’s a bell, a commemorative bell... 📣
Given his physique, which reminds me of the guy in my mirror every morning, I can see why he wouldn’t rock climb up to old Anasazi sites.
Before it was messed with it would make a sound when the desert winds topped 60 mph.
So, it was like an aeolian harp?
That said, the flaw in this video is that does not provide any scale. A pack of cigarettes, a dollar bill, car keys, whatever should have been photographed next to the megaphone. I was really interested in it's size.
Nice
Oh, nice. I follow this guy’s channel. He puts out some nice content.
I’ve read about this device somewhere else. Its purpose had something to do with military testing of something, it’s been so long I can’t recall what it was! Getting old sucks as far as memory goes. Might have been something to do with atmospheric testing of nukes, something like that.
Interesting video, I used to camp and explore all over that part of the Mojave Desert, but that was in the 1970s, years before this strange object appeared. I also used to subscribe to Desert Magazine mentioned in the video.
I watched that earlier tonight. That took a lot of effort to place.
Get Travis Taylor out there with some rockets and a backhoe!
Me too. Bell and Limbaugh were good friends, and Bell’s attitude of skepticism toward government and authority in general made him the second most important conservative voice on radio.
This is what I read
Pretty interesting. But If the aliens had to come all this way to the middle of nowhere to hear whatever sound this thing made (does it make a sound)? Well, they ‘d think us stranger than what we think them.
Prob take off for other worlds. We’re too weird time.
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