Start at Manley Wham Campground on Lake Chelan. Either request a ferry dropoff, or row over from Stehekin.
The first 500-700' from the lake is the steepest and brushiest oh the first 6,000 of climbing. Head up the ridge staying between the two obvious creek drainages. Don't worry, it wont stay brushy for long. The hillside is devoid of water, but has typical eastern cascades pine trees and fairly minimal brush. At the ~6,000 level, you will find a beautiful cirque to your left, in a valley with flowing water year-round. This valley separates Castle from parts of Flora Mtn and features pleasant meadows for camping. Following the streams to the head of the valley, one will reach a talus-covered pass that separates the Flora and Castle formations and leads down to Castle Creek. From this pass, angle to the right along a 3rd class ridge line for 15-20 minutes to Castle's summit.
Lots of Water
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