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Isolillock Peak

Off-trail bushwack and scramble up Isolillock via the southwest ridge.


Total Distance: 6.4 km (return)
Estimated Time: 8 hours
Average Grade: 38.8%
Structure: Linear - Return
Elevation Gain: 1240 m
Start Elevation: 850 m
Max Elevation: 2090 m


From Silver-Skagit Road, turn right onto Sowerby Creek FSR. The road is in great shape and can be followed with a 2wd vehicle. Follow the road to approximately 6.5km to a bridge across Sowerby Creek. The trailhead is on the South side right beside the bridge, marked with orange rocks and flagging tape.


From the Sowerby bridge, head more or less straight uphill, at first through dense second growth which is quite unpleasant. You may cross one old overgrown logging road spur. Once in the old growth timber, the bush vanishes and the hiking is much more enjoyable. Gain the ridge crest near 1700m elevation, and proceed northeast, over a bump and scrambling up the SW ridge of Isolillock's west summit (Class 2). From the false (west) summit, descend 60m in elevation to east to the col between the summits and scramble steeply (Class 3 with good, large holds, and route marked by cairns) to the higher eastern summit, which has a cairn, communications tower and helipad. There is a summit register in the cairn maintained by the Hope Outdoors Club.

Prior to 2000, Sowerby Creek was overgrown and Eureka Creek roads were used to acess the north side of the mountain, where the old Eureka Mine is located. Eureka Creek upper roads were fully deactivated and pulled back in many places in 2001. The Sowerby approach described above is by far a better way at present to approach Isolillock than is Eureka Creek. However, to access the mine, or to climb Silver Peak, Eureka Creek is still necessary to use because the Isolillock-Silver col and the south side of Silver out of Sowerby Creek are bluffy and require technical climbing to reach.


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