I have been out there more times than I can count.
Here are a few Easter Eggs about that area:
1. Before the Colorado River broke loose in 1905 to make the Salton Sea, that sink was one of the main routes from Yuma to Los Angeles. When the Railroad was installed, people followed it as much as they could, then cut West.
2. One of those date palm farms on the SouthWest corner of Salton Sea had a happy accident. When a backhoe was digging out a section, it broke into an old rotten wood chest containing a few hundred gold Spanish Coins.
3. In one of the washes (not saying which), a guy with a water detector found a big gold chain and cross that had washed down into the SS. Had his picture in the paper standing in the SS holding up his detector and gold cross.
4. On the West side of SS by Tule Wash, there are about a half dozen Roman Era Coins. A good friend always wanted to play a joke. If you find them, don't think you unearthed an archaeological treasure. They were planted there to prank a friend. The friend died before getting back to the place to detect (and be pranked). I just haven't gone looking for them, but know where they are.
5. Supposedly a treasure hidden under Travertine Point somewhere. It has been looked for many times and not found.
6. Fig Tree John's Lost Mine. Also supposedly in the area of Travertine Point near a spring in the Santa Rosa Mts.
That should do to get you started.
Best - Mike