This cap has been a real thorn in my side and I am not sure why. In my first search I used a measuring wheel and found the iron post that was cut off at ground level. The cap is actually about 12 inches from the iron post and I missed it when I found the post. After the cap had been found by Sleepy I returned only to be thwarted by a snowfall. I finally got a chance to drop by today and I found a broken survey stake, I knew the cap was nearby and after a few minutes I finally managed to uncover the cap. I am glad to say I found this one!