National Geographic: Extreme Alaska: Denali National Park DVD Video visit a place you are unlikely to ever see Features Mount McKinley Elegant video crisp and clear video images that will astound and amaze you Home to many wild and wooly creatures DVD Special Features - Denali National Park Explorer 3D Interactive and Printable Map Minimum System Requirements for Interactive Map Windows 95, 98, NT, 2000, ME, XP, Vista 486DX/66 MHz PC or higher 64 MB RAM 8 MB video memory Macintosh OS 10.2 or higher 350 MHz G3 or better 128 MB RAM 16 MB video memory