Tool's fourth studio album 10,000 Days was the band's last release for more than a decade, prior to 2019's return FearInoculum. Featuring a cover depicting a three-dimensionalized face - and inspired by artists Alex Grey's trips on ayahuasca, the album was actually packaged with stereoscopic-3D glasses to allow listeners to fully enjoy the album art.
Continuing the mystical vibes of the album art, the name 10,000 Days refers to the time it takes for the planet Saturn to orbit the sun - a 27-year-span that singer and lyricist Maynard James Keenan once described as being just long enough to"let go of old patterns and embrace a new life." Debuting as No. 1 on the Billboard 200, 10,000 Days eventually sold 2.5 million copies worldwide - earning it Platinum status in the US.