Lots of highball boulders (many with easy to set bolted TR anchors if you prefer), along with quite a bit of regular bouldering on solid limestone next to the lake.
Problems range from V0-V7, with the vast majority being V0-V2.
Lots of trees and canyon like formations provide good cover on hot, sunny days. Swim in the lake afterward to cool down!
From Brownwood, take TX-279 north out of town. Turn right on FM-2125 (i.e. towards Lake Brownwood Dam). Continue on 2125 for about 6.5 miles until you come to a 4-way stop and then turn right onto Spillway Road. Go about 1/2 mile on Spillway until it forks and take the left road onto Kirkland Drive. Drive for a short distance and park in the gravel on the right side of the road next to a short section of fence with signs about the park being closed after dark. Climbing is reached by going down the stone stairs behind the fence.
Mountain Project's determination of some of the classic, most popular, highest rated routes for Brownwood: