from the cover:
Various Dungeon Designs For Use By The Harried Referee Includes a Blue and Black Version of 10 Geomorphs
A set of 10 dungeon geomorphs with a map key and quad-ruled sheet, the set is pressented once in blue and again in black. An introduction explains the use of geomorphs and provdes a small sample dungeon.
Two versions exist: the earlier version has "Set 1" on the cover, the later one has "A Basic Fantasy Role-Playing Game Accessory" below the title. The only differences between the two versions are the different subtitles and the OGL is included at the end of the BFRPG branded version.
This accessory is system neutral, there is no reference to rules or mechanics.