Gonna get your feet wet Traditional Cache

This cache has been archived.

The Seanachai: Greetings from Geocaching.com,

While we feel that Geocaching.com should hold the location for you for a reasonable amount of time, we cannot do so indefinitely. In light of the lack of communication regarding this cache it has been archived to free up the area for new placements. If you haven’t done so already, please pick up this cache or any remaining bits as soon as possible. If you are in the process of replacing or repairing your cache please e-mail me in response to this archival and, if possible, I will unarchive your cache.

I want to thank you for the time that you have taken to contribute in the past and I am looking forward to your continued contributions to the sport of Geocaching.

The Seanachai
Geocaching.com Volunteer Cache Reviewer

More
Hidden : 5/6/2009
Difficulty:
1.5 out of 5
Terrain:
2 out of 5

Size: Size: micro (micro)

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Geocache Description:


Not your average road side guardrail cache. The name says it all.
This should be the last one you do after a long day of caching in
Leominster State Forest, it will cool your feet off. Please note
the attributes, I'm not kidding about the poison ivy. Official
Disclaimer: If you're bushwhacking you're either lost, doing it the
hard way or you need some serious help. A not so short note on GPS
accuracy. Any form of positional accuracy is typically defined by a
number which is usually called the Circular Error Probability or
CEP. The CEP is the number expressed in feet or meters that equals
the radius of the circle that you are probably standing within 50%
of the time based on the coordinates your GPS shows. The bad news
is there is a 50% chance that you are outside of the circle. On a
Garmin GPS the CEP is represented by the blue circle you see around
your position icon so if the cache icon is within the blue circle
when you find it the coordinates are essentially dead on regardless
of what your “Distance to” says. It is also worth
noting that the diameter of the blue circle is usually much larger
than the +/- accuracy number shown on the display. When I place my
caches I usually use an external, powered antenna that generally
gets my CEP down under 4 meters +/- after I let the unit average
for 300 fixes or about 5 minutes. 4 meters +/- means that both
coordinates could be high or low by as much as 4 meters or 13 feet
and because +/- implies a radius this works out to an 8 meter or 26
foot diameter circle. What this means is that there is a 50% chance
that the location for any particular cache is somewhere inside of a
8 meter diameter circle because Garmin uses this 50% number for
consumer grade GPS accuracy CEP. When a second GPS or even the same
GPS at a different time is used it will have a CEP or positional
tolerance of maybe 8 or 9 meters +/- unless you put it down and let
it settle for a few minutes. What this means is initially you can
be anyplace inside of a 60 to 70 foot diameter circle for a given
pair of coordinates with a 50% chance that you are outside of that
circle. Tolerance stack-up is where this all really starts to
become a problem, if the cache is actually on the eastern edge of
my circular tolerance and your location is on the western edge of
your circular tolerance it would appear that based on your numbers
the cache is at least 75 feet or more away and the numbers are way
off. Both of us believe that we are where we think we are but, the
probability is that we are both wrong and we are likely to be wrong
in different directions. I welcome suggestions as to the accuracy
of my numbers but please set your unit down and let it average for
at least 5 minutes and then log the actual numbers. The website
link shown below has a great explanation on what to expect for GPS
accuracy, his long term averaged numbers suggest that plus/minus 8
or 9 meters is about the best we can actually expect regardless of
what the folks who market our GPS receivers say. (visit link) One more note, most
GPS units do not have a built-in electronic compass they use a GPS
compass when you stop moving, the unit very quickly loses its
orientation and from your viewpoint the direction to the cache will
bounce all over the place. This problem is exacerbated by the unit
showing your position bouncing all over the place each time it
takes a positional fix. The solution to this is to walk in a
circle, with the track mode or breadcrumb mode on, around the
suspected cache location to narrow your search area.

Additional Hints (Decrypt)

zntargvp

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)


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