It wouldn't take much for the cache to be tapped into by a muggle, either working or doing a drive by. It is high risk but worth the reward! PLEASE be gentle and return to original position. Maintainence has to be done at night due to the high profile location
Enough room for geocoins and small TBs, and teeny swag. Otherwise its just the log book which managed to squeeze in there! You might get a hint if noone can find it but theres too many smart minds out there for now!