Yes. Lots of fun.
Yes. Citizens are allowed to mine two feet deep and keep what they find. There are often small groups mining near the centre of the park and "the ponds".
Emphatic yes. Power tools not allowed for digging and please limit holes to 2 feet deep. Park has been heavily worked but lots of good stuff left if you can put in the time. Bring a sieve to wash your rocks. It helps.
Yes. I have found plenty of small garnet bits and various rocks.
Yes it is
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