Great rainy day hike with rewarding waterfall and beautiful vistas from the fire road. Descent can be a bit tricky, especially if you have a baby strapped to your back, like I did, but overall I highly recommend this trail. Also, be careful not to miss the intersection that takes you back to the portal.
This trail is entirely through the trees and shade. The pups and I loved it! I went counter clockwise. The lower part is along a stream and is mostly flat. There is one steep uphill with stairs and switchbacks, 10 minutes or so running. The return is along a mixed use fire road (not a trail). I did miss the first downhill turn off the fire road to the lower part and just took the next one. That downhill trail was loose dirt and a careful walk. The fire road had water and a dish for the pups, which was a nice surprise.
For parking, I didn't follow Piedmont all the way up to the few parking spots and just parked on Magnolia and ran to the trail.
It seems there are several other trails adjoining this that could make for a longer run or hike. I will run this one again.