Need a little more detail on this drawing. Is this supposed to be a view of boulder from above or side?? If its from the side, which side is it? If its from above, which way is it oriented?
I've never been but it's pretty clear it's a view from above looking down on the boulder and one side has routes and one side doesn't so I bet with those two bits you should be able to go look at the boulder and figure it out...