What was the title of Metallica's first tour specifically supporting The Black Album?

Metallica's first tour specifically supporting The Black Album was the Wherever We May Roam Tour.

The tour followed the album's 1991 release and took Metallica through North America and Europe. It was named after the album track “Wherever I May Roam,” although the tour title uses “We” rather than the song's “I.” That wording difference is a frequent source of mix-ups.

The concerts combined songs from the new album with established material from Metallica's first four studio records. The production used a distinctive stage design with a triangular catwalk surrounding an audience area called the Snake Pit. Many shows were presented as “An Evening with Metallica,” without a conventional opening act.

The tour period was documented in A Year and a Half in the Life of Metallica, which follows the album's creation and the band's subsequent touring. The band later continued touring in related legs and projects, but this tour is the principal initial live campaign for The Black Album.