Start up easy ledges (start of Nuggets) and then squeeze into the stem box. If the bottom section of the box was cleaned you could start straight up stemming probably... Mid section allows you to have some moves using the arête right/left. The final 2/3 is steeper and requires strenuous stemming.
Look for a clean continual box between two really solid columns. To the left of Nuggets.
Pro up to 1". Easily found in the cracks to the left and right in the box if kept clean.