20 freespins in Dwarf Mine

We have a curious report delivered from the chief miner Doc Greatbeard, the head of the dwarf expedition. This exploration has been recently initiated to explore a new Yggdrasil mine in search of the remnants of a Neanderthal dwelling site. So, seven miles below and a bunch of picks ago, they have found something indeed incredible. Now humankind has some certain proofs of our ancestors’ peculiar hobbies like dinosaur races, scalpbooking and knitting by means of mammoth tusks. Let’s see what the miners come across next, but have a look, there is a freespin stratum right in front of you, you’d better extrude them now: