It's pulled from the same information that generates the 24k topo, but it looks to be a relatively new venture and is being honed as people with specific skill-sets come into the mix.  There are a number of threads about it on the Groundspeak forums that I came across today dealing with the building project that is...everything.  Even if this isn't as detailed at a true 24k topo map, it's SO much better than the 100k stuff Garmin puts out.  Maybe it's a 1:25000 scale.  :)

Brian
Team A.I.


Steven Stringham wrote:
I have now downloaded AZ, UT, Wy, and CO. They are on their way into my 
GPS now.

I put AZ in my ETrex Vista Cx already. Very cool. Very nice. Not quite 
as detailed as a full 24k topo, but close. And, the price? Way too good.

Thanks Brian. I had been thinking of purchasing the topos anyways. This 
lets me put that off.

Steven Stringham
Stringcachers


Brian Casteel wrote:
  
It gets better.  This is part of a much larger project, and I think is 
the final piece that is pushing me to get back into school for a 
GIS-related degree so I can do what is clearly interesting me the most. 

Brian
Team A.I.

Jason Poulter wrote:
    
sweet that rocks!!!

Jason
Team Snaptek


Brian Casteel wrote:
  
      
Not too long ago I found out about some custom Garmin Topo maps for 
MT/WY in detail far surpassing either Garmin Topo product, INCLUDING 
Topo 2008.  Recently, the guy creating these custom maps with public 
data, published Topo maps for Arizona. I've tinkered with these maps 
and...WOW.  The level of detail is so much better, and land types (BLM, 
NF, State Trust) are also integrated into the data.  The best part?  
These maps are FREE.

http://www.gpsfiledepot.com/maps/state/az/
http://www.miscjunk.org/mj/mp_main.html

Enjoy!

Brian
Team A.I.
____________________________________________________________
Az-Geocaching mailing list listserv@azgeocaching.com
To edit your setting, subscribe or unsubscribe visit:
http://listserv.azgeocaching.com/mailman/listinfo/az-geocaching

Arizona's Geocaching Resource
http://www.azgeocaching.com

    
        
____________________________________________________________
Az-Geocaching mailing list listserv@azgeocaching.com
To edit your setting, subscribe or unsubscribe visit:
http://listserv.azgeocaching.com/mailman/listinfo/az-geocaching

Arizona's Geocaching Resource
http://www.azgeocaching.com

__________ Information from ESET NOD32 Antivirus, version of virus signature database 3072 (20080503) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com



  
      
------------------------------------------------------------------------

____________________________________________________________
Az-Geocaching mailing list listserv@azgeocaching.com
To edit your setting, subscribe or unsubscribe visit:
http://listserv.azgeocaching.com/mailman/listinfo/az-geocaching

Arizona's Geocaching Resource
http://www.azgeocaching.com
  
    
____________________________________________________________
Az-Geocaching mailing list listserv@azgeocaching.com
To edit your setting, subscribe or unsubscribe visit:
http://listserv.azgeocaching.com/mailman/listinfo/az-geocaching

Arizona's Geocaching Resource
http://www.azgeocaching.com

__________ Information from ESET NOD32 Antivirus, version of virus signature database 3072 (20080503) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com