Leave Marblemount on the Cascade River Road. Entrance to Hidden Lake trailhead is clearly marked at 10 miles from Marblemount. High clearance vehicle is recommended due to the condition on the access road.
This is a beautiful summertime hike - be prepared for breathtaking scenery and constantly changing conditions. The lookout sits on the outer edge of the North Cascades National Park. Hikers can overnight in the cabin, as well as on it's namesake Hidden Lake (located inside the Park boundry, so obtain a permit from the Ranger station in Marblemount)