Watch Online: Underland (2026)

"Why do we seek the void?" Director Rob Petit answers this haunting question in Underland, an upcoming documentary that transforms Robert Macfarlane's acclaimed bestseller into a mesmerizing cinematic experience. Prepare for an extraordinary journey into the depths of the earth—a visual and philosophical exploration of what lies beneath our feet and within our collective consciousness.

Underland (2026): A Documentary Journey Below the Surface

Based on Robert Macfarlane's bestselling exploration of underground worlds, Underland is a cinematic voyage that descends beneath the surface of the earth. This 79-minute documentary promises to blend stunning visuals with profound philosophical inquiry, examining humanity's fascination with caves, catacombs, and the hidden layers of our planet.

Official Release Date

Mark your calendar: Underland arrives on March 27, 2026. This upcoming documentary release will be available through various platforms, and we'll update streaming and theater availability information as the premiere date approaches.

Plot & Themes

Underland invites viewers on a mesmerizing cinematic voyage beneath the surface of the earth, based on Robert Macfarlane's bestseller of the same name. The documentary explores the mysteries, dangers, and philosophical significance of underground environments—from natural cave systems to man-made catacombs. It's a meditation on why humans are drawn to explore the void and what these subterranean realms reveal about our place in the world.

Full Cast & Crew

Starring: Sandra Hüller

• Director: Rob Petit
• Screenplay: Robert Macfarlane, Rob Petit
• Production Companies: Sandbox Films, Protozoa Pictures, Spring Films
• Countries: United States of America, United Kingdom

Key Film Details

• Genre: Documentary
• Runtime: 79 minutes
• Release Date: March 27, 2026

Where to Watch Underland Online

Details about streaming platforms and theatrical release information for Underland will be announced closer to the March 2026 release date. Whether you're interested in watching online through major streaming services or experiencing it in theaters, we'll keep you updated with all available options. Bookmark this page to stay informed about how and where you can watch Underland when it becomes available.

Stay Tuned for Updates

As we approach the 2026 release, more information about Underland will emerge—including trailer releases, additional cast announcements, and streaming availability. Check back regularly for the latest news on this anticipated documentary film.

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