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Video thumbnail: Nature Fortress of the Bears - Preview

Nature

Fortress of the Bears - Preview

Airs Wednesday, June 11, 2014 at 8:00 p.m. ET/PT. Check your local listings.

Fortress of the Bears - Preview

Video thumbnail: Nature A Desperate Mother

Nature

A Desperate Mother

A mother bear is desperate to catch fish to feed her famished cub.

A Desperate Mother

Video thumbnail: Nature Filming with Bears

Nature

Filming with Bears

Fortress of the Bears filmmakers recap on the time they spent shooting in Alaska.

Filming with Bears

Video thumbnail: Nature Getting the Boat Out

Nature

Getting the Boat Out

The crew gets creative when tides prove a challenge for filming on Admiralty Island.

Getting the Boat Out

Video thumbnail: Nature A Heroic Return

Nature

A Heroic Return

It's taken all spring and summer, but salmon finally return to Admiralty Island to spawn.

A Heroic Return

Video thumbnail: Nature Inside the Fortress

Nature

Inside the Fortress

Admiralty Island hosts the largest concentration of brown bears in the world.

Inside the Fortress

Video thumbnail: Nature Sound in the Field

Nature

Sound in the Field

Sound Recordist Dave Ruddick explains how he records surround sound in the field.

Sound in the Field

Video thumbnail: Nature Tides and Jibs

Nature

Tides and Jibs

Filmmaker Shane Moore on filming techniques he used on Fortress of the Bears.

Tides and Jibs

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