Swarth is the third studio album by Australian extreme metal band Portal.

The CD version of the album was packaged in a gatefold hard cover digi-sleeve, with a 16-page booklet.

The release's eight tracks all contain that same distortion blast anchored by down-tuned rhythms, sharing some black metal aspects.

Sputnikmusic praised the performances by every member of the band, and described the album as "claustrophobic", and as "the heaviest, most extreme offering of music to ever be created."

NPR Music's Lars Gottrich wrote that "Nothing gave me more nightmares than Portal's 2009 album Swarth", describing the album as "pure audio horror, the kind of abstract death metal record that, while a brilliant feat, is almost something like watching Requiem for a Dream for me — I'm inspired by the experience, but don't revisit it that often.