Km 12 is a reef break that breaks as an A-fram to give a perfect left and right. the bottom of km 12 is reef. It is deep enough thow to rank it as a pretty safe spot, as the take off is not too steep, and the waves not fast at all. It's a good spot for starting to work on your first cutties on the left. The right has defenitly more wall on it and is not as easy as the left, as it ends on shallow reef, and not on the beach the left does. Km 12 can hold a decent size swell and is pretty consistent too