Computer Game Map by Oliver Frey

A staple of Crash, Zzap and Amxtix (the Newsfield computer game magazines of the Eighties) was an Oliver Frey computer game map, they were functional yet works of art in their own right. I'm not familiar with what game this is from but it has Frey's distinctive style albeit in pen and ink rather than the usual fully painted examples. Nevertheless, an Oliver Frey map is always a thing of beauty and am glad to have it.

If any gamers have a clue what game this relates to, please let me know...