This is a great trail that is many people do as a short backpacking trip. You camp at Deer Lake and then hike around the Four Lakes Loop on the next day. On the third day, you hike back out to your car. It's a great short backpacking trip with some awesome scenery. Here is a report I wrote with pics and maps that describes the route in detail: https://backpackersreview.wordpress.com/trip-reports/four-lakes-loop/