One of a series of easy to find (the puzzle ones may not be easy to solve) caches. This one is a Nano Puzzle.
The cache icon is on an XL, but you don't need to visit it.
The puzzle excludes all the Metas.
The cache may be found at N 51 1(CC).(TBS)(CC - S)(SAA), W 0 3(SAA+WH).(SW)(TPATM-PP)(SW-WH) .