Wimpy hikers, turn the page. This trail offers nothing for you but pain and heartbreak. If you think you've got the goods to scramble up more than 1000 feet per mile, read on. Mailbox Peak brings a serious burn to the thighs of even the best-conditioned athletes, but the rewards make it all worthwhile. From the top of this jutting lump of rock, you'll enjoy spectacular views of the lower Snoqualmie River valleys. The entire Issaquah Alps range sprawls at your feet, with the rocky-topped Mount Si directly across the Middle Fork Valley and the sheer wall of Rattlesnake Ledge just across the South Fork Valley. After soaking in the views, pull the summit register out and leave your signature--you'll find the tattered pages of a notebook in an old metal mailbox wedged above the summit rocks.