calapooia river rockhounding

6 6 6 comments Best Add a Comment TheMacgyver2 3 yr. ago Graveyard Point Rockhounding | Eastern Oregon. I Have to Disappoint You, But.. Gunzenhausen - Wikipedia If you are feeling more adventurous, you can also travel to the North Fork of the Santiam River. Still did not find the answer to your answers about rockhounding in Oregon? Though Oregon is famous for its gemstones, minerals, and rocks when it comes to crystals, things take a different turn. The state rock of Oregon is the famous thunderegg. Of all the months in a year December is the one with the most rain, and the driest of the months is July. South Santiam River. Here is where you might find limb casts, opalized wood, and petrified wood as well. This is because it is very rich in precious stones, minerals, gems, and even fossils.