At approximately mile marker 145 on the Parks Highway, this relatively unknown valley heads northwest into the southern flanks of the Alaska Range. The drainage is about midway between Trapper Creek and Cantwell and actually lies in Denali State Park. You will need to ensure you can cross the Chulitna River safely and a few other small streams. Make your way over some hilly old growth forest and then make your way up the Hidden River valley. In 2012, we received the first report of 4 new routes nearly 21 miles up the valley.
ALERT: Be sure to check on current snow conditions in the Park.