From the introduction: Just Geomorphs bring more geomorphs to Dungeons in Blue! They include a mix of all corridor and room styles: 10-, 20- and 30-foot caverns and worked passages plus sewers and mines, all connecting an assortment of rooms, caves, chambers and caverns. Sets include GM and player versions of each geomorph, plus a map legend, one-third scale reference image, and a brief readme PDF.