Theyve eluded heat-seeking missiles, gone eyeball-to-eyeball with enraged 5,000-pound hippos, hacked through a jungle curtain.

Still, the expedition continues.

Amy, a gorilla who was part of a university learning experiment, is at last returning home.

A professor (Dylan Walsh), electronics expert (Laura Linney, The Truman Show), guide (Ernie Hudson), explorer (Tim Curry) and others follow the scampering ape.

They know she will lead them to the place thats more than her home - its the site of the fabled Lost City of Zinj and its diamond mines.

But what they Dont know can be fatal.

Once they enter Zinj, theyll be the endangered species

From the best seller by Michael Crichton (Jurassic Park) comes an event-packed adventure filled with state-of-the-art technology and primal fear.