On Deadly Ground is a 1994 American environmental action adventure film directed, co-produced by, and starring Steven Seagal, and co-starring Michael Caine, Joan Chen, John C. McGinley and R. Lee Ermey.

Seagal plays Forrest Taft, an expert firefighter who chooses to fight back against the environmental destruction caused by his ruthless former employer (Caine).

In order to make the deadline in the face of multiple delays, CEO Michael Jennings forces his workers to use substandard parts.

After being informed of Palmer's efforts to alert the Environmental Protection Agency and of Taft's access to restricted files, Jennings arranges for both of them to be eliminated by his Chief Security Officer, MacGruder and his assistant Otto.

At the behest of Silook, Taft undergoes a vision quest in which he sees the full truth and vows to make amends for his part in Aegis's crimes.

Jennings then deploys a squad of mercenaries led by an older man code-named "Stone", but Taft manages to evade the group by killing several of the members with booby traps and blowing up a shack which obliterates a helicopter, effectively finishing their pursuit.

Taft sabotages Aegis 1 by killing the main power and forcing a reboot, then releasing hydrochloric acid gas inside the refinery.

Taft fights and eventually eliminates every opposing mercenary (including MacGruder and Stone) using firearms, a steel pipe, and even burning gasoline.

Later, Taft, far from being arrested for industrial sabotage and multiple murders, delivers a speech at the Alaska State Capitol about the dangers of oil pollution and the companies that are endangering the ecosystem.

", the film was given the rating of "C−", stating "This combination action/environmental rights movie is an interesting hybrid in concept, but a filmic mess in execution, including embarrassing Eskimo shaman scenes and well-meaning lecture-finale on endangered species.

"[12] Seagalogy author Vern considers On Deadly Ground to be one of Seagal's defining works, writing, "It's the corniest, most unintentionally hilarious movie of his career...