Be warned, from the parking area there is no defined trail for the first 900 m. There are several options to get to the trail from the parking area, but they all require route-finding skills in order to get through the forest towards the base of the mountain slope to the west. If you head slightly northwest you will reach a creek which you can boulder hop alongside (if the water is not too high) heading west (there is no need to cross the creek). Note this creek is the same creek you follow for the Kusawa Ridge
Trail (just on the other side). Before the creek reaches a canyon and heads more northwest, a well-defined trail can be picked up on a small narrow ridge to the left. Alternatively, you can also reach the start of the trail from the parking area by picking your way through the floodplain forest of willow and poplar or the adjacent spruce forest on the left (southeast). There are many animal trails throughout this area.
Once you reach the actual trail, it heads quite steeply uphill through first spruce and then aspen forests. Thankfully there are many little viewpoints along the trail where you can take a quick break and catch your breath while enjoying the views of Kusawa Lake. The trail begins to follow above another creek drainage to the southwest. As you gain elevation the aspen trees become shorter and more stunted, until eventually disappearing altogether once you reach the alpine. The trail continues over rock and lichen and becomes less defined. Enjoy the views from the open alpine and head back down at your leisure.
Note if you want a longer hike, there are some small ridges and a small alpine lake worth exploring to the southwest of the viewpoint. If you continue further west from there, you would eventually get a view of Jo Jo Lake. These options would add another 12-20 km (return) to the distance listed for this hike. There are many options for backcountry camping in the area if you want to make this an extended trip.