We walked along the pipeline for about 25 or 30 minutes. We then came to the stream, crossed it by the cement structure showen in the other link and climbed the far bank to the water tank. The trail then cuts behind the right side of the tank and follows Pauoa Stream mauka. About 10 minutes upstream from the tank on the right bank is this neat little cave. Its about 4 feet high, wide and about 3 deep. It almost looks man made but it goes nowhere. I think it might have been some kind of gas bubble in the lava flow.
Here is are 2 shots of the bamboo patch. Notice its kinda steep, but not undoable with lots to hold on to.
