I would love that . Because you are so generous I will fill in the story for you . The rio Mayo drains the Eastern side of the sierra Obscuro, while the Yaqui drains the western side. Both start in the vicinity of Yecora. The Yaqui flows north, west, then south. The mayo is slightly east of Yecora then flows south.
San Luis Barbarocas is on the rio mayo about half way to Yecora from San Bernardo on the Eastern bank, inside of a large gentle curve.. I have spent quite a bit of time looking at it through binoculars. There is a junction there with the arroyo San Luis B which flows from the Eastern side of the Sierra Obscura..
Going up the Arroyo SLB to the west, you will see the remains of an unknown mission on the left hand side, south,. there is a large amount of hi grade gold stored in the subterranean vault, but the local Indians don't want it touched, even though the mission has been abandoned for centuries. Continue up the arroyo and again on your left , on a cliff, you will find a huge amount of paintings left by the Jesuits, according to the local Indians, the same ones that are guarding the mission.
Continue up the arroyo and on your right, north, you will see a small side canyon, go up this until you reach the cliff. The entrance to a cave is there, it is not large, but once inside it opens up. The locals have entered and found free gold on the floor, but are afraid of touching it.
The entire Sierra Obscuro sits on top of a layer of Limestone which has been cut and scoured out by the water flows in the past forming many long tunnels under the sierra. I imagine that the gold comes from the contact zone and as the lime stone is eroded, the Gold simply settles to the cave floor.
Continuing up the arroyo, you will come to a junction, the main one goes West to the backbone of the Sierra Obscure, while the right fork heads towards Tayopa. At the junction you will find a couple of small thatched shacks, lt is all that remains of the original village of the Tayopa Indian miners.
The entire arroyo carries Au, AG, & Pt. in placer deposits. More later if Oro de La Tayopa is in accord. [emoji767]@
p.s. Yes, I really do have Tayopa, despite the long delay in developing, or opening it, causing many legitiment doubts.