I have almost zero experience rockhounding or prospecting so I can’t help much, but I took my 5 yr old son exploring there back in April. We drove up Milpitas Wash Road and camped very close to where Houser Geode Beds is labeled on Google maps. We did lots of digging and exploring the nearby hills, resulting in a handful of small geodes. After setting up camp we discovered a lot of rusty nails in the road - I have no idea how we didn’t get a flat. We also saw a western diamondback rattlesnake. Fun place to explore.