agrajag2007: Checked on this one and is inaccessible. Could be some while before the cordon comes down. Last log was in May, so will archive.
GCA4WB3 ▼
Size:  (micro)
This is the bonus for the Crystal Palace Park AdLab. The published co-ordinates are for parking.
All the information required, co-ordinates and hint are in the AdLab.
I have not made the AdLab sequential, but is best done in order.
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: