gps co ordinates

16 Nov 2012 11:00 #55628 by mountain bear
hi guys - just a quick question - the gps co ordinates given on the site - are they cape datum or the wgs 84 - the maps are cape datum and i think i am not sure on the grand traverse tracks and the caves - which do i set the gps to ? sorry to sound dumb here but i have just got a gps - a old one from a frien - well it was never used - brand new still in its box - its a garmin gps 45 xl - please help with which setting to use - thanx

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17 Nov 2012 11:24 #55631 by tonymarshall
Replied by tonymarshall on topic gps co ordinates
All the gps co ordinates on the site are WGS 84, so to utilise these use the WGS 84 setting on the gps. Most maps are Cape Datum, but the datum difference is only important if working to or from a map with your gps.

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17 Nov 2012 11:55 #55632 by BobbyStanton
Replied by BobbyStanton on topic gps co ordinates
Garmin GPSs store all coordinates internally as WGS84 decimal degrees, and convert them on the fly to whatever you set, for display purposes. This is a convenient method for converting to the datum on your map.

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19 Nov 2012 06:22 #55639 by intrepid
Replied by intrepid on topic gps co ordinates
The GPX standard is always based on the WGS84 datum by convention. The software which you may use to load the data onto your GPS should automatically handle this in most cases I think.

With the site upgrade I will add a note some place in the Downloads section to make it clearer for people. I realise the Berg maps are still based on the Cape datum, but this might change, and I feel WGS84, along with GPX, is more universal, so that is why I have gone with that.

Take nothing but litter, leave nothing but a cleaner Drakensberg.

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07 Oct 2013 07:55 #58716 by ghaznavid
Replied by ghaznavid on topic gps co ordinates
I have been having a discussion with the officer in charge of RNNP - he is interested in publishing a list of Berg caves on the EKZN website. I am still trying to get from him an idea of what information they would like to post, but in the interim - what are the rules on publication of info off VE? I.e. can I send him the GPS track download of all the Berg caves?

I would also need info regarding each cave (capacity etc), so I would need lots of input from everyone out there. This may be quite challenging, especially for the more obscure areas such as Vergelegen.

Personally I think its great that EKZN is looking at posting this - according to the official rules you aren't supposed to use a cave that isn't shown on the map. This would be a move away from that idea (even though its not enforced), and being on a website it would be easy to add new caves as they are discovered.

Thoughts anyone?

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07 Oct 2013 08:28 #58718 by Viking
Replied by Viking on topic gps co ordinates
I would think that each regional EKZNW office has built up substantial knowledge of caves in their area??

Also one has to be aware of one of the main reasons some caves are not on the EKZNW maps is that they don't want people using them because of rock art or over use in the past.

I think there needs to be a balance struck between the availability of information to the general public and the protection of sensitive sites.

“Today is your day! Your mountain is waiting, So… get on your way!”
The following user(s) said Thank You: plouw

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07 Oct 2013 08:38 #58719 by ghaznavid
Replied by ghaznavid on topic gps co ordinates
Let me clarify - neither VE nor berg.co.za allow publication of gps co-ords of rock art sites.

The caves in question would be:
- all caves currently marked on the maps
- "new" caves discovered, e.g. Stealth Cave, Manxome Cave, Jarateng Cave etc

The rangers in the areas patrol specific routes, and would have good knowledge of them. But they don't do passes without paths, so they wouldn't know the more obscure caves (e.g. Cowl Cave). They also wouldn't set out to find new caves.

3 passes come to mind as being potential gold mines for possible new caves - North Jarding, Tsepeng and North Hlubi all have plenty of big holes in the rock. A few days of exploration and you would probably get at least 3 usable caves per pass. We already have 2 great caves identified on Central Jarding Pass and I did see a few others that we didn't consider usable due to incredibly exposed approaches.

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07 Oct 2013 09:28 #58725 by Viking
Replied by Viking on topic gps co ordinates
Well when you put it like that: :thumbsup:

“Today is your day! Your mountain is waiting, So… get on your way!”

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07 Oct 2013 13:12 #58728 by Geordie
Replied by Geordie on topic gps co ordinates
Here I go, making friends again:

Personally I think the least info on caves and passes that falls into the hands of wannbe's and day trippers the better and safer for the berg and all of us whom love her so much.

Read the conditions on the downloads and apply some thought please.

G
The following user(s) said Thank You: plouw, Sabine

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07 Oct 2013 14:06 - 07 Oct 2013 14:10 #58729 by ghaznavid
Replied by ghaznavid on topic gps co ordinates

Geordie wrote: Personally I think the least info on caves and passes that falls into the hands of wannbe's and day trippers the better and safer for the berg and all of us whom love her so much.


Without trying to open a can of worms or starting some form of nuclear war - I strongly disagree with that point.

Basis for my standpoint:
- At some point every one of us was a newbie, when I first did an overnight hike in the Berg I based the route off the Geomaps and a short description of how to do Rhino Peak on the EKZN website. Some people are lucky enough to begin in a competent group - many of us weren't
- The information in question is already freely available on both VE and berg.co.za, with very little information not forming part of the overlap between these sites (a few caves and passes missing on either side)
- Numerous people at some point have relied on the inaccurate information recorded in books such as Best Walks of the Drakensberg. This book includes walks such as Cowl Cave, but it doesn't elaborate on how un-welcoming the cave is (opinion based on Dave Gay's writeup - not personal experience). One could easily show up at this cave in the middle of summer not prepared for the fact that they will be soaked in a thunderstorm - Dave goes as far as to rate it a 2/5 for comfort and a 0/5 for shelter. But the maps show it as a 4 sleeper - same as Giant's Cave which is deep, has a low roof and I would rate it as a 3/5 for comfort and a 5/5 for shelter.

My point being that we aren't hiding information that isn't already in the public domain, and while some of it may fall into the hands of the wrong people - it will also be falling into the hands of the right people.

This is something that must be approached with caution though - and that's why I have no intention of blindly merging a bunch of cave lists and ratings to form a list. In addition to which - matters such as difficulty in finding a cave could differ from person to person, I know many people couldn't find Giant's Cave when they looked for it, but we found it in relatively thick mist without any difficulty. My point being that such a compilation is not something I intend to take lightly.
Last edit: 07 Oct 2013 14:10 by ghaznavid.

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