The National Geographic Topographical California CD-ROM set from 2002 offers users a comprehensive geological map of California in an interactive digital format. Published by National Geographic, the 10 CD-ROMs contain detailed topographical data and images, making it a valuable resource for educators, students, and outdoor enthusiasts. With the convenience of the CD-ROM format, users can explore various regions of California in depth, gaining a deeper understanding of the state’s geography and geological features.