"The script calls for a virgin jungle, but there's not one we could safely run four vehicles through," said Helman. "We could've approached it in a more modern way on a big stage with a blue screen, but that's not the way we did it. We basically shot it the same way we would've shot it 20 years ago."
Spielberg filmed the pursuit scene on dirt roads in a more sparse jungle in Hawaii. Helman traveled to Argentina, where he was born, and Brazil to capture images that would be used to craft the junglescape, including a looming cliff where part of the chase takes place.
At the ILM offices, Helman and his team meshed the Hawaiian footage with the Brazilian and Argentinian imagery, adding huge swathes of flora using a new digital-effects technique. The result is a fictitious jungle, one with its own look, layout and laws of physics, that only exists inside the computers at ILM.