The movie The Devil’s Mouth is a survival creature horror thriller directed by Jeff Wadlow and written by Aja Gabel, Myung Joh Wesner, and Jeff Wadlow. The film stars Kathryn Newton, Gavin Casalegno, Lana Condor, Tommi Rose, and Nico Hiraga in the lead roles. The story follows a group of college friends whose dream vacation in Thailand turns into a terrifying nightmare after they become trapped inside a flooded cave with a deadly predator. Here’s everything you need to know about the filming locations and behind-the-scenes details of The Devil’s Mouth.
The story follows five college friends who travel to Thailand for one last adventure before starting their adult lives. They join a guided swim through a remote cave system known as The Devil’s Mouth, but their exciting trip quickly turns into a fight for survival when they become trapped underwater with a dangerous predator. As their oxygen runs low, they must face both the creature and their own fears to escape alive.
The movie will be released on July 29, 2026. It will premiere on Amazon Prime Video and is produced by Amazon MGM Studios in association with Lionsgate.
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When and Where Was Amazon Prime Video’s The Devil’s Mouth Filmed?
| Film Name | The Devil’s Mouth |
|---|---|
| Genres | Survival, Horror, Thriller |
| Filming Locations | Krabi Province, Khao Khanab Nam, Hong Island, Tham Lot Cave, Chiang Mai, Bangkok (Thailand), Oxenford, Queensland (Australia) |
| Filming Dates | June 26, 2025 – September 11, 2025 |
| Cinematography by | James Kniest |
| Release Date | July 29, 2026 |
The Devil’s Mouth was filmed mainly across Thailand, with additional underwater production completed in Queensland, Australia. The filmmakers combined real tropical beaches, limestone caves, dense forests, and modern studio facilities to create the movie’s frightening survival setting. Principal photography began on June 26, 2025, and wrapped on September 11, 2025.
📍Krabi Province, Thailand
Krabi Province served as one of the movie’s main filming locations. The production used its beautiful coastline, towering limestone cliffs, crystal-clear waters, and tropical islands to introduce the friends’ exciting vacation. The peaceful beaches and scenic views make the audience believe they are watching a dream holiday before the story suddenly turns into a terrifying survival experience. Krabi’s natural beauty created the perfect contrast between paradise and danger.
📍Khao Khanab Nam Limestone Mountains
The famous Khao Khanab Nam limestone mountains were used for several establishing shots around the fictional entrance to the Devil’s Mouth cave. These twin limestone formations rise nearly 100 meters above the Krabi River and are among the region’s best-known landmarks. Their mysterious appearance helped create the dark atmosphere surrounding the cave before the horror truly begins. The nearby caves and dramatic cliffs gave the production an authentic natural backdrop that would have been difficult to recreate using CGI alone.
📍Hong Island (Koh Hong), Thailand
Many of the vacation scenes were filmed on Hong Island, also known as Koh Hong. The island’s white sandy beaches, turquoise lagoons, and tall limestone cliffs provided the perfect location for the friends’ final carefree moments together. The production captured the island’s peaceful beauty before the characters entered the dangerous cave system. As part of Than Bok Khorani National Park, Hong Island is famous for its untouched scenery, making it an ideal filming location for a survival adventure.
📍Tham Lot Cave, Mae Hong Son Province
Several authentic cave scenes were filmed inside Tham Lot Cave, one of Thailand’s largest natural cave systems. The cave features underground rivers, massive limestone chambers, stalactites, and semi-flooded passages that closely matched the terrifying environment needed for the story. Using a real cave added realism to many sequences before the production moved to specially built studio sets for more dangerous underwater scenes. The cave’s natural formations helped make the movie feel more intense and believable.
📍Chiang Mai, Thailand
The forests and mountain landscapes around Chiang Mai were used for scenes showing the group’s journey away from busy tourist areas toward the isolated cave system. Thick tropical forests, winding roads, and rugged hills helped build suspense as the friends traveled deeper into the wilderness. These locations created a feeling of isolation long before they entered the flooded caves, making the audience feel that help was becoming farther away with every step.
📍Village Roadshow Studios – Oxenford, Queensland, Australia
A large portion of the movie’s underwater scenes was filmed at Village Roadshow Studios in Oxenford, Queensland, Australia. The production used the studio’s world-class water tanks to safely film intense underwater sequences that would have been impossible to shoot inside real flooded caves. These controlled facilities allowed the cast and crew to perform complex stunts, underwater creature attacks, and rescue scenes while maintaining high safety standards. The studio’s advanced technology helped create realistic flooded cave tunnels and dramatic underwater visuals that play a major role in the film.
📍Bangkok Studio Stages – Bangkok, Thailand
Additional interior scenes were completed on custom-built sound stages in Bangkok, Thailand. The filmmakers recreated narrow cave tunnels, underwater chambers, and claustrophobic passages inside the studio, giving them complete control over lighting, water levels, practical effects, and the movie’s terrifying creature sequences. These specially designed sets allowed the production team to shoot scenes that would have been too dangerous inside natural caves while keeping every detail realistic for the audience.
The Devil’s Mouth Behind the Scenes
To make your search for The Devil’s Mouth filming locations even more interesting, the filmmakers shared behind-the-scenes photos and videos showing the cast training for underwater scenes and filming inside massive water tanks.
Several cast members also posted behind-the-scenes moments from Thailand on their Instagram accounts during production. Fans got a closer look at the beautiful beaches, limestone cliffs, and tropical scenery used throughout the movie.
For more information about other filming locations, stay tuned to this post. We will update it as more official production details become available.
Is there any trailer available for The Devil’s Mouth?
Yes, the official trailer for The Devil’s Mouth was released on the Amazon Prime Video YouTube channel. You can watch it here:
The Devil’s Mouth is set to be released on July 29, 2026, via Amazon Prime Video.
FAQs
Q1: Where was The Devil’s Mouth filmed?
A1: The Devil’s Mouth was primarily filmed in Thailand, including Krabi Province, Khao Khanab Nam, Hong Island, Tham Lot Cave, Chiang Mai, and studio facilities in Bangkok. Additional underwater scenes were filmed at Village Roadshow Studios in Queensland, Australia.
Q2: What scenes were filmed at Tham Lot Cave in The Devil’s Mouth?
A2: Several important cave sequences in The Devil’s Mouth were filmed inside Tham Lot Cave. The cave’s natural limestone chambers and underground river helped create the movie’s realistic flooded cave environment.
Q3: When did filming for The Devil’s Mouth begin?
A3: Filming for The Devil’s Mouth began on June 26, 2025, and was completed on September 11, 2025.
Q4: Can I visit the filming locations of The Devil’s Mouth?
A4: Yes. Many filming locations from The Devil’s Mouth, including Hong Island, Khao Khanab Nam, Krabi Province, Chiang Mai, and Tham Lot Cave, are open to visitors. Some areas may have seasonal or conservation restrictions, so it is best to check local travel information before planning your visit.
The Devil’s Mouth combines the breathtaking beauty of Thailand with advanced studio filmmaking to create an unforgettable survival horror adventure. From the stunning beaches of Krabi and the peaceful lagoons of Hong Island to the mysterious passages of Tham Lot Cave and the high-tech underwater facilities in Australia, every filming location helps bring the terrifying story to life. If you’re planning to watch The Devil’s Mouth, these real-life locations make the movie even more fascinating. Keep checking back for more updates as additional behind-the-scenes information becomes available.
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