Park at the posted coordinates and enjoy the scenery. While there, look around for the hint you need to get the final coords.
PS. Don't get frustrated until you analyze your choices.
If you see a dam at this spot, use these coordinates
n43 07.682 w71 38.858
If you see a guardrail from this spot, use these coordinates
n43 07.682 w71 38.859
If you see a bridge from this spot, use these coordinates
n43 07.682 w71 38.860
You can walk from here to this one.