He’s in the marshlands. I think we got him.
Evading the police, Marko stumbles into a Particle Physics Test Facility where his molecules are broken down and recombined with the sand in the pit where the test takes place.
This ubiquitous field could have been filmed almost anywhere, but Cinefex #110 mentions it being created at the Golden Oak Ranch in Newhall.
(Spider-Man 3, 2007)