Solid rock and decent climbs, but the approach makes this the least climbed area in the park.
To reach the anchors: follow the same approach as the Cave Tower. Once on top, head to the south side to find a tall tree with a limb that reaches across to the other side. Cross your fingers and hope you're not the one to finally break it as you walk the plank. There are chains for rappelling on the Middle Tower so thankfully you only have to cross it once.
On the topo at the park visitors center, these climbs are under the "Side Canyons" section.
Getting There
Follow the trail from the parking lot down the stairs. Take a left at the fork. You'll pass a big tower on your right with a cave through it and the middle tower will be next on your right after passing a narrow canyon.