Gallery: PHOTOS: See how the world’s largest dump has been transformed ...

© Leonel Lima Ponce for Inhabitat
Capping is currently underway at the East Mound, where soil is being compacted atop an impermeable plastic membrane. This gives visitors a peek at the process, which is designed to prevent leakage of toxic gases and leachate, a sludge byproduct of decomposing trash and water, into the new environment.

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