Dig Thundereggs at Rabbit Springs

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In southern Idaho, Rabbit Springs is ideal for collecting thundereggs.

You’ll spend most of your time picking up thundereggs on the surface which makes it an excellent location for families and junior rockhounds.

Thundereggs come in different sizes and are fairly easy to spot among the other rocks.  Keep an eye out for a clear to milky white layer on the outside of round to oval-shaped rocks.

Keep reading below to learn more about what to bring, types of clothing to wear, and driving directions.  We even provided a direct link to the hours of operation for the mine.

Thundereggs and Geodes

Using the right tools for thunderegg collecting can make the process easy and stress-free.

  • Thundereggs – round to oval-shaped nodules with quartz crystals or banded agate on the inside.  


Some rock collectors cracked them open while others cut them open with a diamond saw.

If you’re an avid collector of thundereggs and geodes then you’ll want to bring a couple of 5-gallon buckets and a big wheeled cart.  The additional weight will add up quickly because thundereggs are prevalent at this location.

thunderegg idaho

Tools for Collecting Thundereggs

A thunderegg collector will want to pack a variety of tools for this trip. They should have snacks and drinks in case they get thirsty or hungry, as well as packing materials for thundereggs collected onsite. Don’t forget about the weather and make sure to dress appropriately.

Must-Have Tools and Accessories 

  • Sunscreen
  • Big wheeled carts
  • 5-gallon buckets
  • Hat or sombrero
  • Small hand rake
  • Small garden tools
  • Gloves
  • Long pants
  • Long sleeve (depends on weather)
  • Boots
  • Towels for drying off
  • Fresh clothes (you’re going to sweat)


Make sure you’re a good steward of the property.  Please pick up any trash and leave the location better than when you found it.

Most importantly, have fun collecting these geodes.


Driving directions


Filer School District 413

Rabbit Springs, ID

Type or copy the GPS coordinates below into your Google or Apple Maps.

GPS Coordinates

42.06572, -114.67387

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