The Lena Lake Trail in the Hamma Hamma River watershed offers a spectacular hike up to a scenic alpine lake and easy access to other trails, including the Upper Lena Lake Trail in the Olympic NP and the path into the Valley of Silent Men in the Brothers Wilderness area. I hiked to Lena Lake (the lower one) with my son in early April. The hike up wasn’t too difficult, though it included lots of switchbacks in the first mile. At the end of this approx. 2.5-mile-long trail (5 miles out and back), I was greeted with amazing views of Lena Lake and the surrounding peaks. Many campsites line the western and northern sides of Lena Lake. I expect that this is a popular hike, especially during the summer season.