[Sierra Mike] I answer to INJ mostly. In fact elsewhere I tend to be just NotJohn - Im not sure why I've got the 'Im' in the Morniverse. I'm also a bit of a cartophile - I've got 2 shelves devoted to them at the moment. I have a version of the StevieruleTM which goes 'No Map no Trip'. OS maps now cover the whole of the UK at 1:25000 and are so much clearer than the 1:50000, which I use mostly for cycling. I still love the 1 inch tourist maps with the colouring & hachuring but you can't beat the large scale for navigating in mist/cloud. Also you get spoilt by the quality of orienteering maps 1:10000 or 1:15000 using specialised software, where you can navigate to the nearest 10 metres.
I have inherited dozens of OS maps from my cartophilic Dad, mostly 6th Edition but some older than that (pre-war). The expansion of some towns is phenomenal. Crawley, for example, was a compact place with a station and a high street but is now a vast, amorphous sprawl. The new 1:50,000 and 1:25,000 maps are more accurate and detailed than their older counterparts, particularly in regard of contours. There are sad (old meaning) bits such as "Course of old railway" and "Mines (disused)" (Yeah, so's mine). Even though the OS Grid has always been metric I'll never get used to heights in metres. My house is at 557 ft, not 169 metres, so I claim the title of Highest-living Morniverser. [Non-mappies look away NOW] The OS Grid is a Transverse Mercator projection, prime meridian 2°W, based on a model of the Earth developed by Sir George Airy over 100 years ago. It's a tiny bit different from modern values both in size and degree of flattening. There is a scale reduction of 0.04%, presumably to allow for the expansion of the scale in the projection away from the prime meridian.
[Rosie] I cannot claim such a lofty domicile, but two minutes' drive gently uphill takes me to this point, Cossham Hospital, the highest point in Bristol at 369 feet (112 meters). On a clear day the views over the city, the Severn Valley, Forest of Dean and even the Brecons are excellent. Oh, and thanks for the techie stuff!
[ImNotJohn & Bigsmith] Blimey. We used to use the old red cover jobs when I was doing it, though admitedly I was less than serious about orienteering and probably just ran with an amateur crowd. I had no idea there was a 1:25 000 series of maps available commercially. Do they cover the entire UK? The only 1:50 000 OS map I can reliably put my hand on today would be "Land's End and The Lizard", and I can't for the life of me remember why I bought that one. I used a couple of Welsh ones until they fell apart but Land's End? When did I go there? It has some touristy annotations on it, like scenic photography overlooks and so forth, which my Welsh ones didn't. I suspect it was a detail added halfway through the print run or something. [Rosie] That's a nice legacy you have. I didn't remember that the 1 Inch to 1 Mile series had a metric grid. I do remember that we were taught to read an OS map in Geography class when I was around 11 or 12. That's when I fell in love with the things.
[SM] It's the wonder of satellite technology. Effectively the whole country has been remapped (at least as far as contours are concerned) in a matter of a couple of years whereas before there was a large team of cartographers doing physical surveys. This has got rid of some of the more obvious mistakes that used to exist, although there are still paths shown going over cliff edges in a couple of places that I know. For orienteering we normally start with a base plot (usually from the OS) with contour intervals down to 2.5 metres where appropriate (5m for very steep ground). There is then a specialised package (OCAD - there were others but this has come out on top) which has all the correct colours and symbols built in and you can build the map from that. There is still a need for fieldwork, but the whole thing is much slicker and maps get changed up to about 2 weeks before an event. Also with cheap high-quality printing most events now have the courses pre-printed - no need to copy from a master, and you can even run off more copies while the event is taking place if you get more than expected on one course. With electronic punching you get a print-out of your final and split times as soon as you finish and results from an event are on the web the same day. Up to about 10 years ago you left an SAE at the event and got the results about 1-2 weeks later.
For mountain walking I like Harvey Maps. They are at 1:40000, often photo-enlarged to 1:25000. They aren't as good in farmland as they don't show field boundaries, but they do show what is actually on the ground - there are different symbols for a right of way which is visible and one which is not visible as well as another for a visible path which is not a r.o.w.. They also change the colour of the contours to show rocky or marshy ground.
This weekend I will continue recovering. I like maps but do not own many (only one proper map, really), mainly because we don't have much landscape over here. Or perhaps we have far too much of it. In any case, [INJ] I feel remarkably uneasy when I am in an unfamiliar place without a map, and I really need to know where North is. Changing hemispheres is very disturbing. I came very close to mapping our parts of Oman, at least as far as roads and such things go, because they (maps) either did not exist or were wildly inaccurate. But the cost of GPSrs was too high. I now have a nifty little one, and have been enjoying the occasional geocache, thanks to my sister and brother-in-law's introduction. It definitely helps break up long drives, and is a fun way to explore new places. I haven't done orienteering in at least 20 years.
[ImNotJohn] For years I lived in a street that the local "A-Z" type guide showed as having a cross street where there wasn't so much as a kerbstone. When this error survived two reprintings I got clued in. By pure chance I was living next door to a copyright protection scheme. The map publisher had put in a fake street so that they could easily catch competitors who saved the cost of a survey just by copying their maps. I've learned since then that an awful lot of this sort of thing goes on. Dictionaries, thesauri (?) and encyclopediae (??) have fake entries in them to snare copyright infringers. The original pubishers work on the theory that you'd be unlikely to actually read the articles/entries since you can't get to them in any day-to-day use of the dictionary/thesarus/encyclopedia but only by reading through them serially.
I have to admit, sending someone off a cliff seems a bit much though. I hope this gets fixed in GPS sets since judging from recent news items some GPSers are a bit too slavish when it comes to following the directions their boxes give them and I wouldn't be surprised to read of someone stepping out into empty space.
I have a couple of 1:25000 maps covering my area of residence. A month or so ago I dug out one of them in order to scan part of it and send the resultant image to a cyber-acquaintance. I doubt that I had referred to this publication within the last three or four years. I also forgot to put it back in stowage that evening. The following afternoon my wife came home and plonked down before me a new copy of the very same map. Having given her a puzzled look she explained that the previous evening she had looked for the 'missing' map and, not finding it, thought it best to buy a new one.
Hmm, talking of Bristol, I'm going there for the first time shortly - any recommendations for good places to take a 3 year old and 5 month old? We've got the zoo on our (short) list already...
I wasn't clear enough. In both the cases I know of the path exists, but the line has been 'smoothed' to an easy curve and so doesn't avoid the feature whereas, on the ground, there is a deviation to miss it.
[SM] Yes, the false street is indeed a standard copyright protection measure. [Rosie] You may hold the highest living Morniverser right now, but if so I probably held the title for a couple of years when we had a 10th floor apartment here in Singapore. Now we are back at sea level.
Without having any idea of where everyone lives, I think that Dujon might be the loftiest Morniverser, since he lives on a mountain outside Sydney. The first Antipopilg in 2003 was at Blaxland, (1404 feet, or 427 metres) and I don't think he'd be much lower than that (if not higher up).
I was kidding about the apartment in Singapore, obviously, but I was living at 265m back in 2003-2004 when we were in Texas. In my pre-Morniverse days I lived at 188m in VIrginia and at about 280m in Ann Arbor Michigan. None of these surpasses Dujon. If I can go back to my childhood, though, I lived for a year at 946m, and INJ was at university at 1250m around the same time.
(I think there is a pretty good chance that INJ is also the person here who has been up the highest (while still staying on the ground) though I might be wrong about that.)
flerdle) It may well be Dujon, then, for current residence. My feet-on-the-ground record is El Teide in Tenerife, 3717 m or 12,196 ft. The air pressure there is about 64% of sea-level pressure and you noticed it. Quite a lot of puffing and blowing climbing the few hundred feet from the cable car to the summit. Water would boil at 88°C, just about enough to thicken gravy but not enough for a decent cuppa.
I lived for a year at about 420m on the Swiss/French border. It didn't feel at all high, because everything around was so much higher, namely the Jura mountains to the west, and the Alps etc to the south-east.
[Rosie] When I typed that about INJ I was vaguely thinking "we already had this conversation not so long ago", and your Tenerife posting reminds me that indeed we did.
(CdM) Probably my fault, then, because stuck on my bedroom wall is a b & w 1978 photo of me and half a dozen other herberts and several herbertesses, all from Croydon Astronomical Society, as we crowd round the summit marker. Where has INJ been? I think I've probably got the record for current UK residents. The modest height does make a difference in that snow, on the rare occasions that it falls, lasts much longer up here than in London and numerous occasions when there's light drizzle and mist whereas London is dry. Some of this is the London Heat-Island effect which on a warm calm summer night can be quite stark, with temperature differences of 8°C.
[flerdle] Thanks for adding a few inches to my height. I am at a mere 250 metres (depending on where on my little plot of paradise you stand) which is around and about 850 feet asl. As it is now approaching, if not past, the noon time I might pop down to my local club for a wee bit of luncheon delight, which should bring me home quite heady. Cheers.
At the risk of blowing my own trumpet (but, hell, I am proud of it), my highest point is the summit of Mera Peak in the Himalaya at 6476 metres (21,247 ft). I now live at about 40m asl.
[Rosie] No, my fault, not yours. I just remembered because my highest is almost identical to yours, but in a completely different part of the world (Colorado Rockies).
[Rosie] - No oxygen. I was slowed down by the lack of it, but not reduced to gasping. The main effect was that I lost my appetite completely. I was there in March-April, so pre-monsoon. Overnight it was regularly down to about -20°C. During the day there was a lot of bright sunshine, but I reckon the shade temperature didn't get above freezing; it was fleece jacket, thick gloves & balaclava even when working quite hard and down clothing as soon as the sun set. Mera is the highest 'trekking peak' in the Himalaya, anything over 6500m is a 'climbing peak' even if there is no technical difficulty. However Aconcagua is higher and presents no technical difficulties and is only about 20km from a good motor road. It's probably the ultimate challenge for the non-climber.
(INJ) I'm further impressed. The pressure up there is about 42% of sea level pressure. Apparently the lack of oxygen causes considerable problems with cognitive tasks but as I imagine you weren't writing up a PhD up there it probably didn't matter. Well done! I could manage Leith Hill (965 ft) these days but probably not Snowdon (3561 ft) even if I called it Yr Wyddfa.
[Rosie] Acclimatisation helps a lot. We flew in to about 2400m and then walked in for about 10 days, mostly on the ‘walk high, sleep low’ principle, which got us to a camp at about 5300. We then did a short day up to 5800 and then a push to the top. I reckon the last 700m would have taken me a bit over 2 hours from sea level (I was fitter then), and actually took between 4 & 5 hours. We then dropped about 1500m, to below the previous 2 camps. As for cognitive impairment – I ‘lost’ a good part of the next day. I couldn’t remember much of it only a day or two later and have never been able to, even prompted by photos. Another interesting effect was that my tent companion went into a pattern of Cheyne-Stoking while asleep – disturbing when you first hear it, but common at altitude. Of course, one of the effects of the cold and low pressure is that the air is extremely dry – it was hard to drink enough, especially as water bottles exposed to the air froze. It’s the physically hardest thing I’ve ever done and I certainly couldn't do it now.
The good news is that we've discovered the cat is a mouser (one of the reasons for getting her). The bad news is finding this out obviously entailed a renewed incursion. We look forward to being woken up by her dropping half-dead mice on our faces and being shown how to kill them. Will need to look at the bait trays over the weekend to see where its been taken. Sometime over the next few weeks we're getting our floors repaired which should seal up some of the holes at least.