Head to the end of the Obstruction Point parking lot to find the trailhead. When you reach a junction, keep left for the Elk Mountain/Deer Park hike. As you round the back side of the hill, you'll be treated to breathtaking mountain vistas, overlooking the expansive Beaver Valley below.
If you're coming from Elk Mountain, when you reach this trail keep straight and follow the trail past the viewpoint. When you reach the junction make a left to get back to the parking lot.