
In 1936, Sheriff Tomas Ortega disappeared after secretly investigating strange marks and unexplained events in the desert.
His notes led to a mysterious explorer named Captain Voss—and to something Ortega called The Old Desert.
Decades later, documents, photographs, recordings and film are raising the same questions again.
Follow the investigation. Examine the evidence. Decide what you believe.

The Mesilla Files (TMF) is an original storytelling universe where history, mystery, adventure, and imagination unite in an ongoing investigation.
Primarily set in the deserts and mountains of the American Southwest, TMF follows the work of the TRC Research Center, CTA (Citizens for the Truth About Aliens), and a growing ensemble of investigators, historians, field researchers, and unforgettable characters as they seek answers to age-old unsolved mysteries.
As you explore the site, you'll discover:
📁 Archive Sessions
📜 Case Files and Research Reports
🏜️ Historical investigations
👤 Memorable characters and interviews
🎙️ Audio recordings and serialized adventures
🎨 Original artwork and printable collections
🗺️ Maps, journals, and recovered documents
🌵 Stories inspired by the beauty and mystery of the American Southwest
TMF blends historical contexts with fictional investigations into forgotten legends, unexplained events, strange symbols, mysterious disappearances, and the intriguing possibility that there is far more to our world than we currently comprehend.
Explore the evidence. Follow the stories. Form your own conclusions.
The investigation is expanding—and the questions are getting bigger.
New material is being added regularly to The Mesilla Files as TRC researchers examine recently uncovered documents, revisit old mysteries, and follow new leads stretching from Mesilla into the surrounding desert—and beyond.
Among the latest developments:
🔒 NEW — TMF SUBSCRIBER PUBLICATIONS
There’s more happening inside The Mesilla Files than ever before.
Throughout the week, subscribers can follow the investigation through Dylan’s Flash, TRC Field Bulletins, Historical Bulletins, Art Unveilings, Mercer’s Journal, and the TMF Update—plus occasional Special Bulletins when something simply can’t wait.
Most complete publications are available only to TMF email subscribers.
❌ Why Is Mesilla at the Center of the X?
Four locations. Two in New Mexico. Two in Mexico. Connect them and Mesilla sits near the center. Coincidence, ancient connection—or something else entirely?
📁 New Archive Sessions & TRC Research
Elena Vargas and other TMF researchers continue examining the evidence, while new TRC analyses are challenging some long-held assumptions about Mesilla and the surrounding region.
There is much more under investigation.
Explore the latest releases. Follow the evidence. And draw your own conclusions.
The files are open. The investigation continues.


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We just released a new TRC Research Center Analysis looking at the El Paso–Mesilla region approximately 50,000 years ago.
Our first serialized TMF audio book is underway.
The Saga of Sheriff Tomas Ortega tells the story of the man behind one of the most important—and mysterious—figures in the Mesilla Files.
The first six chapters are now available, following Ortega from his early years through his arrival in Mesilla, his unlikely appointment as Sheriff, and his growing realization that something very strange is happening in the desert and Organ Mountains.
We've begun releasing material from the massive collection of documents recently uncovered in the TOX archive.
Some of this material is difficult to explain. Some of it raises serious questions about authenticity. And some of it may change what we thought we knew about the Mesilla Files.
We've decided you should have the opportunity to see it and decide for yourself.
“Someone drew an enormous X across New Mexico and Mexico. Mesilla is almost exactly in the middle.”
Archive Session #10 --THE FILM is now available.
An old 16mm film discovered in the TRC archives raises disturbing new questions about Captain Voss, the Enclosure, and a landscape that may not belong to the world—or time—we know.
Listen to the latest Archive Session:
There are new blog posts several times a week, offering different perspectives on the mysteries, people and discoveries surrounding Mesilla.
Explore Archive Sessions featuring newly released reports, investigator commentary, historical discoveries, audio recordings, and developing mysteries from across The Mesilla Files.
Explore Case Files documenting unexplained events, unusual evidence, mysterious disappearances, strange encounters, and continuing investigations from throughout the Mesilla Valley and beyond.
Explore Research Groups & People featuring the investigators, researchers, organizations, and mysterious individuals connected to the discoveries and continuing investigations of TMF.
Explore the TMF Blog for investigator insights, character stories, behind-the-scenes commentary, historical observations, new discoveries, and perspectives from across The Mesilla Files.
The Mesilla Files is a work of fiction created for entertainment purposes. While certain historical locations, events, and individuals may be referenced, all stories, characters, organizations, investigations, reports, artifacts, and narratives presented as part of The Mesilla Files universe are fictional or fictionalized unless otherwise noted. The Mesilla Files is a fictional mystery/storytelling project incorporating real places, history and scientific concepts. Characters and organizations presented within the story may be fictional or portrayed in character.
© 2026 The Mesilla Files. All Rights Reserved. The Mesilla Files™, TMF™, TRC Research Center™, Desert Legends™, Sun Comic Books™, related characters, stories, artwork, reports, symbols, and fictional organizations are the intellectual property of their respective owners and may not be reproduced without permission.
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