There are multiple ways to reach Opabin Prospect, but the most direct route is what’s mapped here. From the Lake O’Hara Lodge area, start along the lakeshore trail and continue onto West Opabin Trail. It makes a slight climb through the forest to find the shore of a smaller lake, which is one that you’ll soon see from high above. The work comes just after this lake, when the trail climbs steeply to the Opabin Plateau. It’s short but strenuous, and once on top, you’ll find relief in a relatively flat walk to the viewpoint. Before you know it, you’ll emerge from the trees and onto the cliff top.

The simplest return is to go back the way you came, but with extra time and energy you might follow the Circuit Trail to explore several small lakes atop the plateau. You can also complete a longer loop with another trail to return to the O’Hara lakeshore.

Sources: https://funlifecrisis.com/hiking-guide-lake-ohara/ https://travelwiththesmile.com/blog/lake-ohara-hiking-camping-guide/