This is the northeast trailhead for the hike to Heart Lake and Thimbleberry Lake. There is a minor river ford between Heart Lake and this trailhead, so if you're planning to hike out and back from one trail, you might consider using the south trailhead. That way, even if the river feels impassable, you still get to see both lakes before turning back. Alternatively, you can also make a loop by walking Sawmill Creek Road.
This trailhead has a short access road that may be blocked by a gate. Per Sitka Trail Works, if the gate is closed you can park across from the Industrial Park and hike up the road to the trailhead. (Make sure not to block the gate.)