Congratulation bbright. You have selected one of the more rugged areas for your hunt, get in shape. If you go to
http://www.summitpost.org/ and click on "ranges and areas" below the main banner, next page comes up,showing all the mountain ranges of the world, you will see two boxes under the main banner, areas and ranges in the first box, and the second box is empty, type Colorado in the second box, hit Go. Next page will show all of Colorado's mountain ranges. Scroll down to the Sawatch range. Click, this page will show northern, central, southern Sawatch range. The Central Sawatch is yourarea of intrest for unit 48. The photos will show the ruggedness of the area, the info will give you helpful information on trailheads and more. Lots to research there. Good luck on your hunt. Unit 481 is south of unit 48, Mt Yale and Mt Princeton fall in unit 481 I believe, please check Colo Dow unit boundaries. Good Luck o your hunt, hope this helps you. HH in Pa