GC5218J ▼
Size:  (micro)
But which one?
The best place to park is in the Oak Brook Library parking lot. It's only a short hike along a crushed limestone trail.
Additional Hints (Decrypt)
Decryption Key
A|B|C|D|E|F|G|H|I|J|K|L|M ------------------------- N|O|P|Q|R|S|T|U|V|W|X|Y|Z
(letter above equals below, and vice versa)
What are Attributes?
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You'll collect a digital Treasure from one of these collections when you find and log this geocache: