Recommended to rodeo clip the first permadraw.  Start standing in the thorn bush, do several hard moves left to gain the bolt line.  Powerful moves upward.  Don't bother wasting to much energy looking for the feet, there really aren't any.  Continue upwards to the top.  Be prepared to use all your tricks from years of bouldering (mantle), alpine climbing (the alpine knee), ice, and mixed climbing (I have absolutely no idea what my tool is hooking under the snow) to top out.  Goes dry.  

Goes out the left hand side of the cave in the center of Highway Wall, pitch 2 of stairway.