It is a little tough to find, but it is worth it once you do. Start from the main area (Breashears crack) and head west up the trail. You will have to mount 3 large boulders while heading west. Once you reach the farthest west boulder (large and short) Head south straight up the hill. You will see one arete that is pretty cool. Direclty behind this is a large problem that has an A shape. You start on underclings and head up a rail of perfect slopers. Then you either jump or reach for a perfect sloper out right. It then continues striaght up the rock. Suberb problem. It is in a quasi-cave system and has ferns and such growing out the rock. The slopers are exquisite and it is definitely a must do.
Protection
You will need multiple pads for this one. (Unless you are hardcore) The landing is high, uncontrolled and into a pit of spikey rocks.
This boulder problem is fantastic. My rough estimate is V6-V7. Landing is kind of freaky but should be manageable with enough pads and spotters. One of the best problems at Morrison South.
This problem is called "Rupture", and has been rated anywhere from V5 to V7. Personally, I believe the rating depends on the height of the individual doing the problem, and really comes down to whether you can dyno to the large sloping dish or just take it.
The problem "officially" begins as a sit-down start in the crack system, and immediately trends right on to the sloping rail. At the termination of the rail, one either takes, or dynos, to the beautiful dish, and then works straight up the face/left-hand prow to the top. Obviously, the crack to the right should be considered off, and I can attest to the relative ease of protection with one pad and a COMPETENT spotter.
Incidentally, there is another line on this block, that has been completed, albeit on TR. If you traverse the sloping rail to its termination and head up the left side of the face, you will find a crimp just out of reach. The trick is to really lock off on the last small dish on the sloping rail and reach very high. After that, attempt to not fall off of the rail, and convert your heel-hook to a foot and stand up. Once you are standing, the rest of the problem is pretty casual.
As mentioned beforehand, I have only done this on TR while we were cleaning this line and "Rupture", and would not recommend doing it without a team of spotters, and a bunch of pads. Instead of landing on the large slab beneath "Rupture", you will land somewhere to the left of it, in the jumble of rocks if you are lucky enough not to hit any of them.
If you feel so inclined to discuss S. Morrison aka "The Dark Side", please feel free to shoot me an email, as I was directly involved in the second phase (post Williams, etc.) development of that area, and can pretty much tell you whatever you would like to know about the area. One amusing side note, is that this area, much like many bouldering areas around Denver, seems to be constantly under development by the local neophyte boulderer. The problem "Rupture" has seen several "FAs" in the last couple of years that just aren't.
Please be extremely careful when bouldering in this area, CO NOT cut down any more trees, as the original developers made a concerted effort to leave certain ones around to retain the soil, provide shade, and not decimate the area - there are no tree over there currently that should get in your way, only stumps that some moron left that will jam you in the heels and lower back. Please pick up your trash, and if you see the a**hole with the shovel over there, feel justified in hitting him over the head with it, and give him an extra whack for me.
This boulder route is so sweet. Me and my climbing partner were over at Morrison doing Helicopter and what not in the Black Hole just sticking everything down. We started to leave and my partner was just like we should check out South Morrison. Holy cow, amazing that we did it was about 1130PM when we were there. So, Rupture was crazy. The dish is solid and then when you get that toe hook on the rail, holy crap, crank to the crimp to the left and just campus to the crimp up top above the Bubble Rock. Get in there deep and you will be like, What the heck, I lost my hand in this crimp from there top it out and enjoy the view. If you can try this at night, it's crazy. The view is amazing.
Honestly Rupture for me is the must do line in Morrison Area. I know folks really like Ghost Dance, which I get its amazing, but Rupture is something different. It is not that hard, and the fall is okay. Its a landing like RMNP. As for the grade? Not sure did it with one head lamp, and a spotter. Hard moves are done no more than 13 feet in, the rest is heady.