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This week’s Mystery Monday clue might have you swimming in circles if you can’t figure out what it is (a prerequisite to identifying where it is). Think you know this spot? You’re in luck: this week we are giving away a prize bundle, featuring a Black Hills Coupon Book (valued at $20, with over $2,600 worth of savings on goods and services from local merchants) and a copy of the latest Black Hills Visitor magazine. One winner will be chosen at random from all guesses received, even if they can’t identify the location—so you’ve got nothing to lose! If you’d like a shot at this great prize, give us your best guess on our Facebook or Instagram pages.

Thank you for playing along, and good luck! The answer (and winner) will be announced on Friday.