The "Happiness Pool" was so named by our Angel Falls tour guide. Since I can't figure out if it has a more formal name, I stuck with his suggestion. In any case, this waterfall is visible not long after relaunching the boat into the Carrao River just upstream from the Mayupa Rapids. In our case, we visited this falls on the way back from Angel Falls for an opportunity to get wet under a waterfall. A couple of fellow mates from our tour group actually went partway up the waterfall and then walked through the curtain of water and disappeared behind it. It's a pretty cool photo opportunity, but there's not a whole lot else to this roughly 5-10m waterfall.