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| Where Was The Devil's Mouth Filmed? Discover Every Known Shooting Location From the 2026 Survival Horror Film. (Photo: Prime Video) |
The Devil's Mouth throws viewers into a terrifying survival story, but before the chaos begins, it also showcases some of the most spectacular landscapes in Thailand. From crystal-clear islands to ancient limestone caves, the 2026 creature thriller makes the most of real locations that feel almost too beautiful to be hiding a nightmare. Not every filming site was publicly identified during production, as keeping some locations under wraps helped avoid interruptions while cameras were rolling. However, several major locations have since been associated with the film, giving fans plenty of places to add to their travel plans.
Viewers have been just as fascinated by the scenery as the story itself. While some fans admitted the underwater tension had them holding their breath from the sofa, others were busy trying to work out which beaches and caves appeared on screen. A few even joked that the destinations looked incredible right up until the point a hungry predator decided to join the holiday. Fair enough, really.
THE DEVIL'S MOUTH Filming Locations
Krabi Province, Thailand
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Much of the film's opening act unfolds across Krabi Province, where turquoise water, towering limestone cliffs and tropical islands create the perfect postcard holiday. That peaceful atmosphere doesn't last long, of course, because horror films have an unwritten rule that beautiful places rarely stay relaxing for very long.
Krabi is one of southern Thailand's most famous travel destinations, attracting visitors with island-hopping excursions, dramatic coastal scenery and spectacular sunsets. Beyond the film, travellers come for rock climbing, snorkelling and exploring hidden beaches scattered across the Andaman coast.
Khao Khanab Nam, Krabi
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The iconic twin limestone mountains of Khao Khanab Nam provide several memorable establishing shots surrounding the entrance to the fictional Devil's Mouth cave. Rising dramatically above the Krabi River, these towering formations instantly give the story an air of mystery before the real danger even begins.
The landmark has long been recognised as one of Krabi's symbols. Visitors typically reach the caves beneath the cliffs by traditional long-tail boat, where limestone chambers and archaeological discoveries offer plenty to explore without needing to outrun anything.
Hong Island (Koh Hong), Krabi
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The group's graduation getaway was filmed around Hong Island, whose white sandy beaches and emerald lagoon perfectly capture the carefree mood before everything spirals into survival mode. It is exactly the sort of place where friends promise this will be the best trip ever. Horror fans already know how that sentence usually ends.
Part of Than Bok Khorani National Park, Koh Hong remains one of Thailand's most photographed islands thanks to its calm waters, hidden lagoon and excellent snorkelling. Its protected environment continues to attract both international visitors and filmmakers.
Railay Beach, Krabi
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Another striking coastal backdrop featured in the production is Railay Beach, where dramatic limestone cliffs meet soft sand and crystal-clear sea. The location adds even more visual scale to the film's opening sequences, highlighting Thailand's spectacular coastline before the characters venture into far less welcoming territory.
Railay is famous among rock climbers and beach lovers alike. Accessible only by boat, the peninsula feels wonderfully secluded despite being one of the country's best-known holiday destinations.
Tham Lot Cave, Mae Hong Son Province
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Many of the film's authentic cave scenes were captured inside Tham Lot Cave, one of Thailand's most impressive natural cave systems. Its underground river, enormous limestone chambers and naturally dark passages provide an ideal setting for the story's increasingly claustrophobic survival sequences.
Located in Pang Mapha District, the cave is usually explored by bamboo raft along the Nam Lang River. Massive stalactites, stalagmites and ancient rock formations have made it one of northern Thailand's standout natural attractions.
Chiang Mai, Thailand
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The forests surrounding Chiang Mai help transition the story away from busy tourist hotspots into remote wilderness. Dense jungle, rugged hills and winding mountain roads gradually replace crowded beaches, quietly warning viewers that the characters are heading somewhere they probably shouldn't.
Chiang Mai is celebrated for its national parks, waterfalls, mountain villages and outdoor adventures. Its varied landscapes regularly attract international productions looking for authentic tropical forests without travelling too far from established production facilities.
Village Roadshow Studios, Oxenford, Queensland, Australia
While Thailand supplied the natural scenery, many of the film's technically demanding underwater sequences were completed at Village Roadshow Studios in Queensland. Large-scale water tanks allowed the production team to safely recreate flooded caves, underwater chases and complex action scenes under carefully controlled conditions.
The studio has hosted numerous major international productions over the years thanks to its world-class sound stages and specialist water facilities, making it an ideal choice for ambitious underwater filmmaking.
Bangkok Studio Stages, Thailand
Additional interior scenes were completed on purpose-built studio sets in Bangkok, where detailed cave systems were recreated with complete control over lighting, water depth and practical effects. These carefully designed environments allowed filmmakers to create narrow flooded tunnels that would have been almost impossible to film safely inside real caves.
Bangkok remains Thailand's largest production hub, offering experienced crews and modern studio facilities that continue to support both domestic films and major international projects.
Principal photography for The Devil's Mouth ran from 26 June 2025 until 11 September 2025, with filming moving between Thailand's coastal landscapes, northern cave systems, jungle regions and studio facilities before concluding with specialised underwater production in Australia. Combining real-world scenery with carefully constructed sets helped create a believable survival adventure without asking actors to spend weeks inside genuinely hazardous flooded caves. Probably a sensible career decision.
The result is a movie that uses its locations as more than simple scenery. Every beach, mountain, cave and forest contributes to the growing tension, making the environment feel like another character rather than just a backdrop. It is also a reminder that some of the world's most beautiful destinations can become unforgettable on screen for reasons visitors would hopefully never experience in real life.
If more officially identified filming locations are revealed by the filmmakers in the future, they can help complete an even fuller picture of the production. Until then, these known locations already offer an impressive travel itinerary for fans wanting to follow in the cast's footsteps. Which location would you most like to visit, and did you spot any filming sites that deserve a closer look?