"Solway Firth" was released on July 22, 2019, as the second single from the band's sixth studio album, We Are Not Your Kind, following "Unsainted" two months previously.

Reviewing the song for Metal Hammer, Adam Rees claimed that it was "an altogether different assault" from "All Out Life" and "Unsainted", describing the track as "dramatic, a little troubling and downright heavy".

[8] Loudwire's Lauryn Schaffner praised the performances of vocalist Corey Taylor and drummer Jay Weinberg on the track, outlining that "Corey Taylor's vocals [shine] through with brutal intensity [... and] Jay Weinberg's drumming also stands out as a high point, crushing extended double kick patterns throughout the cut.

[10] It was co-produced by Uproxx and Prime Video, with the band's percussionist and frequent director Shawn "Clown" Crahan directing.

[11] Ryan Reed of Rolling Stone outlined that the "gruesome" video "alternates head-banging live performance footage with violent clips from" the series, highlighting "Bloody scenes [including] a man holding two severed arms and one character bashing someone's head into a bathroom sink.