Interesting - mapped as prominent, I saw two distinct boulders in approaching (did not notice a third). But was not sure of feature description other than something that had to do with boulder(s). Thought maybe between boulders but it wasn't as I passed between. So, in my visit, it was retrospectively on the south one - but not a problem as you note.
I looked all around the north one on the ground, before finding it on the other one. Not a big deal, but it does seem like an odd way to place a control. There was a much smaller boulder further down the slope which I assume was the "southern" one.
Description was SW side of N boulder so I expected it to be between the two big ones.