BP’s calamitous behavior in the Gulf of Mexico is the big oil story of the moment. But for many years, indigenous people from a formerly pristine region of the Amazon rainforest in Ecuador have been trying to get relief from an American company, Texaco (which later merged with Chevron), for what has been described as the largest oil-related environmental catastrophe ever.

“As horrible as the gulf spill has been, what happened in the Amazon was worse,” said Jonathan Abady, a New York lawyer who is part of the legal team that is suing Chevron on behalf of the rainforest inhabitants.

It has been a long and ugly legal fight and the outcome is uncertain. But what has happened in the rainforest is heartbreaking, although it has not gotten nearly the coverage that the BP spill has.

What’s not in dispute is that Texaco operated more than 300 oil wells for the better part of three decades in a vast swath of Ecuador’s northern Amazon region, just south of the border with Colombia. Much of that area has been horribly polluted. The lives and culture of the local inhabitants, who fished in the intricate waterways and cultivated the land as their ancestors had done for generations, have been upended in ways that have led to widespread misery.