The location link included in the original post is a bit north of the actual site. The entrance to the area is between McGregor Dr. and the railway on the north side of 10th Line, near the Canada Post box.
http://maps.google...3389&t=h&z=16&om=1 The site dosen't appear to have changed much since the original pictures were added - easy <5 minute walk from the road, worth the trip.
Cheers!