The route is best hiked clockwise.
Follow the main Tapiado fork (wash road) until it almost meets the Seco del Diablo wash.
A very short hike up and down into Seco del Diablo wash (point "Over").
Follow the wash (road) down, a bit sandy and a lot of motorcycle tracks and later on car tracks. The canyon is much narrower, so the tracks are harder to avoid.
At point "Fork right", turn right up a narrow drainage that runs parallel to Seco del Diablo.
At point "Over", a couple of small rocks, in the drainage up to a small mesa.
A bit difficult to find the right wash that heads back towards Tapiado, just follow the GPS route.
How to get here:
The easiest route is to take the exit Palm Spring (Highway S2 Mile 43) and drive the Vallecito Wash.
Some sand, so drive carefully if you don't have an AWD.
Some ground clearance is recommended and an AWD is a lot safer in the sand.
Take the marked exit Tapiado heading North.