There are at least two artists name The Skull. One is a Chicago three-piece experimental punk band and the other's a doom-metal band formed by former Trouble members.
These are photos from concerts where The Skull played, so they may be of other bands that played the concert as well.
HAMMER OF DOOM XIV 2019 Nov 15 - 16, 2019 Würzburg, Germany Uploaded by Murmlermicha