The Pits refers to the mish mash of non-specific boulders below Morning Sun Boulder and All-Bran Wall.
From the West end of the parking lot look for a trail near the last campsite, a short distance before the gate at the Loop Trail. The trail crosses the creek then forks into a lower trail to the left and an uphill trail to the right. The left fork will lead you to the Burbs II Boulders and the right trail leads to Morning Sun Boulder and All-Bran Wall. Follow the uphill trail to the right. From the base of All-Bran Wall scramble down and explore the boulders below and West of All-Bran and Morning Sun.