If you like rocks–even a tiny bit–then you have to hunt for thundereggs with your kids. We made it our summer “Grand Adventure” in August 2014 and had a blast. The best place in Oregon to find thundereggs is at Richardson’s Rock Ranch near Madras, Oregon. Getting there is easy and the prices for collecting and cutting are reasonable.
Thundereggs are Oregon’s state rock. They’re orange-sized mud balls that, over time, filled with layers of agate. Colors vary widely and they can sometimes contain crystals. A few pictures online and we were hooked. We had to go get some thundereggs for ourselves!
Drive north to Madras through the bucolic farmland. Green grass, red barns, and black & white cows abound. Stop in Madras for bathroom breaks and to fill up on water and snacks. The shop at Richardson’s Ranch has a few things, but mostly they sell rocks.
As we made the turn into the Ranch, the terrain changed into an arid moonscape. We wondered what other treasures were under the rocky soil, besides thundereggs.
We were in a hurry to get to the digging grounds, so we stopped at the ranch store and got directions and buckets. Then we headed out and wasted no time setting to work. We didn’t really know where to start, so we just followed the crowd and dug with everyone else. We found a couple right away, but I was hoping for more fertile ground.
I took the rock hammer and wandered a bit, picking here and there. Around the corner, away from the crowd, we found our spot.
|Our rock hounds included our two older kids, plus my daughter’s friend.|
|We traveled this trip with two babies, one a little over a year (but not walking) and one just 5 months old. My husband set up a blanket, umbrella, and sat with the babies while I hunted around with the big kids.|
|My son, age 3, digging out a thunderegg.|
In this spot, thundereggs were plentiful and very easy to dig. Even our 4-year-old son had no trouble nudging them out of the rock with the rock hammer. Here’s a very short video showing how easy it was to find them! The rock is very soft and sedimentary; it really is rock, but crumbles like dust when tapped with a rock hammer.
|A round, orange-sized “egg” peeking out of the rock.|
|A chunk of rock with a broken thunderegg embedded.|
|Our family (minus the two babies chilling in the air-conditioned van, just a step away) at the South Blue Beds at Richardson’s Rock Ranch.|
Cost: $1 per pound (10 lbs minimum), plus cutting fee at $0.35 per inch. It cost us less than $20 to cut open all of our rocks (about 1/2 a 5-gallon bucket)
Amenities: water, snacks, popsicles, porta potty, lots of rocks and rock souvenirs. Rock museum.
Our kids ages at the time of visit: 9, 4, 1, and 5 months
Gear needed: sunscreen, rock hammer (or chisel & hammer), shade, water. Some areas stroller friendly, other areas better for a baby carrier.