To go along with the Halloween spirit I thought I'd base this puzzle on the human skeleton.
The total number of bones PLUS The number of bones in the skull PLUS The number of phalanges PLUS The number of bones in upper and fore arm MINUS The number of auditory ossicles = A
The number of carpals in one hand TIMES The number of bones that form the neurocranium PLUS The number of bones that form the splanchnocranium MINUS The number of tibias = B
The number of bones in each extremity MINUS The number of ribs = C
The answers are based on the adult female human skeleton so that not to confuse the number of bones. This cache is close to a low walled area clearly marked with no trespassing signs. The cache is not in this area so please stay out of it.
Cache is located at N32 07.A W110 42.BC
Due to this cache being stolen, I've had to replace it and move it slightly. After coming up with the correct answer subtract 00.002 from your north and add 00.011 to your west. This will put you at the new location.