Pretty sure this hasn't been done before, never seen any chalk on it and had to clean up the foot break a fair bit. I got a detailed assessment of some of the lesser known things Big Sam has here done over the years and he didn't mention this. Anyway, it starts sitting right of Fertile Delta and Delta force, below the middle section of the Blackpool Car Jack traverse. Feet in or around the big break (foot lock) and use a decent low LH hold and tiny RH crimp to pull on and up to a pair of small neighbouring crimps, adjust and snatch up left to a reasonable edge. Now match in, gain the good slot and finish up Fertile Delta.