The Redwood Forest Defense (RFD) is a loose-knit group of activists who use nonviolent protest tactics to fight industrial logging in Northern California. And, as the short documentary Sentinels details, this includes a now years-long tree-sitting campaign to protect an 18-acre stretch of pine, fir and redwood trees in an otherwise quiet slice of Humboldt County, California. To make the film, the US directors Derek Knowles and Lawrence Lerew made visits to the protest site over the course of nearly 200 days, including to the small camps atop redwoods some 100 feet from the ground. The resulting portrait is an observational look into the group’s unyielding commitment to their cause, which requires a unique melding of survivalism, tree-climbing and activism expertise, and, perhaps above all else, the endurance to outlast the time, money and resources of their opponents. By allowing the camera to linger on scenes, Knowles and Lerew skilfully convey the passage of time, and contrast the quiet serenity of the treetop camps with sights and sounds of industrial logging just a few hundred feet away.
Tree-sit with activists as they fight industrial logging from 100 feet above the ground
Directors: Derek Knowles, Lawrence Lerew

videoThe environment
How do you save an endangered redwood forest? Making your home in the treetops
13 minutes

videoEcology and environmental sciences
To really get to know the tallest trees in the world, start with their leaves
3 minutes

videoEarth science and climate
A portent of climates to come – on the telling rings of the bristlecone pine
7 minutes

videoEcology and environmental sciences
In an ancient English rainforest, John creates charcoal and cultivates growth
12 minutes

videoNature and landscape
A year-long observation reveals the secret life of a tree and its animal visitors
3 minutes

videoThe environment
Surgeons with chainsaws – the breathtaking craft of logging on a Swiss mountainside
13 minutes

videoPolitical philosophy
The radical activist couple who fought for social change in the courtroom
21 minutes

videoFairness and equality
With barely a possession to his name, Rabbit builds a life around fighting corruption
10 minutes

videoEcology and environmental sciences
Conservation versus renewable energy: an ecological battle brewing in Scotland
9 minutes