From: Jeffrey W. Knoll (Jeffrey.Knoll@AZWebHost.com)
Date: Mon Jul 22 2002 - 19:05:11 CDT
(A while ago) Alan wrote:
> ...Coming down the Tooth of Time and down the ridge
> there are no trees. There were no clouds. I had very strong coverage
> the whole way. I know where I walked. I would love it if anyone can
> show me a me a map that resembles that route. I planned it based on
> the latest map of the South region available (South and Central both
> show it) but it was still a good ways off. In fact, when I plotted
> the point where the trail ends at base camp from UTM coordinates on
> the map, that waypoint showed up on the other side of the main road,
> according to the built in map in the GPS. Guess what, that point was
> way on the other side of the road although I did not walk to it as I
> had had enough hiking that day.
Most likely you have mismatched datum between your GPS and map. Multiple
points consistently off by a fixed amount is a good clue.
Don't put total faith in the maps, either. Or perhaps stated more
accurately, in the trails drawn on the maps. Most of the USGS maps are very
old. New trails are made and old ones can be rerouted, closed, or lost to
overgrowth. Unfortunately I have got myself into jams by trusting the map
more times than I care to admit (What happened to the bridge that was
supposed to be here? :) ) Now, I always review my route with the local
authorities, just to make sure there are no surprises.
I was on 627H1, itinerary 26, which comes in over the Tooth. In logistics
our crew leader was informed that the Phil-maps do not reflect the newer
trail coming down tooth ridge to base camp. The logistics guy mentioned the
trail was significantly longer and showed the crew leader a small map with
the new route. It was an 8.5 x 11" sheet that probably was printed from
some mapping software based on a GPS track. Too bad they didn't issue the
crew a copy.
With this change in mind, one of our adults turned on his GPS at Tooth Ridge
Camp to track the route into base camp. I have not seen this GPS track, but
I believe he said the length was 5.42 miles. This was measured from the
sign post at Tooth Ridge Camp to Services Bldg. It would be interesting to
see where the new route goes in comparison to the old one.
-- Jeff
------------------------------------------------------------
Jeffrey W. Knoll
627H1, Itinerary 26
Venturing Crew 124
Grand Canyon Council
Phoenix, AZ
-------------------------------------------------------
Scouting E-mail Discussion Lists @ usscouts.org
Subscribe/Unsubscribe at http://usscouts.org/lists/
Listserv Commands at http://usscouts.org/lists/lc.asp
-------------------------------------------------------
Send listserv commands to: listserv@troop47.com
Send postings to: philmont@troop47.com
List FAQ found at: http://usscouts.org/lists/faq.asp
List Administrator: philmont_owner@troop47.com
-------------------------------------------------------
As you gather around this virtual campfire with fellow
Scouts and Scouters, do your best to be trustworthy,
loyal, helpful, friendly, courteous, kind, obedient,
cheerful, thrifty, brave, clean and reverent.
-------------------------------------------------------
This archive was generated by hypermail 2.1.7 : Thu Mar 13 2003 - 10:38:06 CST