The Underground 

Hiked out here this week and a lot of problems look like they are missing holds especially on the feature boulder.

Follow the cairns.
Our group tried to add some more. Ten minutes past the watchtower, the cairns took us in a circle, but we pushed in and got there 2+ hrs later.
Start early, a GPS could help, but it's a fairly long approach for Joshua Tree Standards.

The approach is easy and straight forward.
From Queen Mountain parking lot, follow the old road to it's end at the base of the mountain. Here two cairns mark the trail along the base, through The Wastelands and up hill to The Crique of the Climbables. Continue past The Cirque to a plateau. Head left (west) here on a trail marked with carins for about 300 yards to The Watchtower. From here continue NW along a path marked with carins. This will bring you up over the ridge to where Walt's Rocks come into view. Carins mark the way as the trail winds down into the basin and eventually across to below Upper Walt's Rocks. This point is to the right of Lower Walt's Rocks. A third class gully rises above, also marked by carins. Ascend this to a plateau below the upper rocks, head left (NW) and The Three Towers area will be reached after a couple hundred yards.