It was quite the bonus that this cap was published the night before my road trip with van der Decken to the south-west corner of the province. The GPSr was already loaded with brass, so I manually punched in the coordinates, changed the destination programmed in the Nuvi and off we went.
Yep, the pillar is visible from the road and a turnout provided convenient parking. A quick duck under the gate onto Provincial Park land, a quick walk through the grasslands to the cap location. Or, rather to close to the cap location. We were both examining the pillar when we noted the GPSr had ground zero several meters away. How odd. We searched the ground near where we zeroed out, poked and prodded a promising looking depression but came up empty.
I agree with vdd -- it appears the original was destroyed /moved around 1991 which, as a southern-Alberta boy, seems to me was about the right time frame for the construction of the Oldman Dam which makes sense. The fence mentioned in the hint is nowhere to be seen, and if the trail mentioned in the hint is there it has become very obscured over the years.
Always a pleasure getting a chance to be one of the first to visit a cap for the added adventure of "wonder what's there..."