An excellent problem, worth the effort to find it! Undercling the big coffin-shaped hueco and make a long reach to a jug, double toe-hook the hueco and move to the rail on the lip, then figure out how to get your feet up without dabbing and top out. The holds at the top can be a bit mossy from lack of traffic, but it's nothing a brush can't fix. A true hidden gem.
(There is no "official" grade for this problem, mine is only an estimate.)
Location
On the left side of the roof, starting on the obvious large coffin-shaped hueco.
Protection
A pad and a spotter to keep you from rolling down the hill, should things go totally awry.