It says to call to make sure they are open. But I just drove there. You can go there no gate but if they are not open means trespassing. No tour because it is not inside the cave. All it's out in front of you, and you'll dig your own treasure. Make sure to have your tools and proper shoes and conformable clothing. $20 per person. Lots of fun.
With a group that size you might want to contact the mine to make things easier on your group. The staff. will show you were you can dig and what is of limits, they are very helpful . The cost is 25 dollars per person. And can increase in cost if you would like to dig a private vein, it can help you find some amazing Crystal's, Bobby the owner is in charge of that. His number is on their web page. Most if all enjoy, turn over rocks, keep looking at your feet for a hidden treasure.
As has been stated not required. But there is a gate. I would highly recommend letting them know with such a large group so they are ready. You need to bring your own tools and such. Also be ready for primitive conditions. This is a mine.
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