Big City Challenge Mystery Cache
retiredprof: In light of geocaching's recent changes to the publishing rules, I am archiving all 150 of my challenge caches. I am a retired psychology professor, not a computer programmer. I am simply unable to comply with the new geochecker rules. I am sad that I have to do this. For those who have already begun any of my challenge caches, please note that you can still log archived caches. If you have any problems with this decision, please contact the geocaching authorities so that your suggestions may be considered.
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Difficulty:
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Terrain:
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Size: 
(small)
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The cache is located on the western edge of Yuba City, with parking available across the street about fifty yards south. Be sure to note the important logging requirements below.
************LOGGING REQUIREMENTS************
As a country boy from Yuba City, I don't visit big cities very often...except vicariously thru geocaching. Your task is to find a dozen caches, each with the name of a different big city (over one million population within the city limits) in the title. Do not use abbreviations, such as NY, LA, or Rio, but possessives are acceptable. And do not use more than two caches from a series.
There is no time limit, you may already have found the required caches. When logging this cache, list your cache finds as shown below...and include five categories (icons) of caches. Good luck on your trips to the big city...
1AF9F----2 million---Going back to Cali-----3-20-09 (trad)
13WK0--1.2 million--Dallas Barbie-----------9-08-07
2AVTN---7 million--...Road to Hong Kong---6-26-10
ZF22-----2.1 million--USS Houston----------12-01-06
2GQ5N--7.6 million--Lima--------------------- 2-28-11
1GZFB---7.5 million--London in Linden-------9-15-09
2KRX8---3.8 million--Los Angeles...Sub...----1-03-11 (puzzle)
142D4----1.7 million--Vulcan's Mecca---------9-06-07
16E57----8.1 million--New York Flat---------10-04-07
4F10-----1.5 million...Philadelphia Exper...---6-26-08 (virtual)
1E6C0---1.4 million...Phoenix Park------------8-09-08 (earthcache)
1YHQ7---1.3 million...San Diego...Railroad--1-22-11 (multi)
1PBMX--13 million---Shanghai bend gate....7-23-09
2AVT8----5 million---...Road to Singapore---6-26-10
Additional Hints
(Decrypt)
ernpu hc