There are at least five artists with this name:
These are photos from concerts where LAKE played, so they may be of other bands that played the concert as well.
Saarbrücken Open Air '79 Aug 18, 1979 Saarbrücken, Saarland, Germany Uploaded by Zimtrim
Saarbrücken Open Air '79 Aug 18, 1979 Saarbrücken, Saarland, Germany Uploaded by Jr39 Credit: © Jörg Reuter - "original ticket"