Big Mike’s Rock & Gift Shop

The billboards and massive piles of colored glass will lure you in. There are two building on premises: one rock & mineral store, and one souvenir store. Both are worth a look. If you like rocks & minerals you should be able to find an interesting specimen or two, and if you like wacky souvenirs, they have those too. The guys in the souvenir shop were funny.
There is a «mystery house» which I neglected to enter.

Big Mike’s Rock Shop, that pretty well says it all. Sure you can get tourist trap junk, but stick to the rocks, Don’t expect a senior or veterans discount which is sad. Stick to the rocks which are fairly priced. Worry stones that are $ 8 -$ 15 on I-​40 out West are only $ 2.00 here. I left a few of them for those that read Unilocal reviews :-)

Anyone who has visited Mammoth Cave have seen the signs:
«The Largest rock collection in Kentucky!»
«See Big Mo!»
«Only ¼ miles away!»
If Big Mike’s sounds like a tourist trap, it is. But don’t flee just yet, take a quick detour and pay homage to one of the last of a dying breed, the Roadside America.
Go and see Big Mo, a fairly large mosasaur skull, and then take a group photo with fiberglass Big Mo in front of the shop. Visit the $ 1 Mystery House with cheap distortions and optical illusions. Look at the tacky souvenirs. Then get some emergency snacks and/​or drinks, and continue on to Mammoth Cave.
Big Mike’s does have a nice collection of rocks, but you can find much better ones for much cheaper elsewhere, like the Internet.

Pretty disappointing even as gift shops go. Pretty much everything that they have can be found anywhere in the US. The only saving grace is their extensive rock collection.