I didn't really bring a change of clothes, but you certainly can. They supply you with a pail and a pick to dig up the crystals, but you can always bring a tool that you think will make it easier. My boyfriend used his pocket knife a lot. Make sure to bring a ton of water, and pack a lunch :) the people that work here are all really nice and helpful--you're going to have fun!
Definitely extra clothes and water. You will be searching for crystals in an area with no bathrooms, running water, etc.
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