Just south of Rattlesnake mound is another large bluff. Drive south from Rattlesnake and Park on road and hike straight out(east) to cliff. Most of the bouldering is on the southern end, but there is some good bouldering on the northern end as well.
Off of 14th Ct, just south of Rattlesnake mound. Drive about a 1/2 mile and park. Walk east to bluff. Boulders are scattered up on north and south rims. House with weather tower is just to the north of the north rim.