At the trail head there is a sign posted warning of the difficulty of the trail and advising hikers to not "recreate beyond their abilities." I will say that was a very fair warning. The hike is beautiful, the trail leads you back to the farthest and highest point of the valley at which South Zabata Lake is located. However, almost the entire hike is uphill. Very physically challenging (as much on the way down as the way up). Bring lots of snacks and water, you will need it! It took us about 8 hours total. Fun but intense, make sure you are prepared.