MAGNATRON Rock Lock. "The re-invention of the auto-locking karabiner". Two
independant magnets lock the karabiner nose. 24 7 7 kN. Gate opening = 22mm. NB Only 8 left at this price. $35.00
I would suggest that the old climb Overburden is what is now called The Joker. I know there's a couple of grades difference but that's neither here nor there in grading new routes. It's certainly about the middle of the cliff and the only likely candidate and they both tend to move right. I suspect the "white outcrop of rock" may be a tongue-in-cheek reference to the guano stains.