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St. Ann's Hill - The Ramble - OK04E8
Eigenaar: Amberel
Log in om de coördinaten te kunnen zien.
Hoogte: meter NAP
 Provincie: Verenigd Koninkrijk > Surrey, East and West Sussex
Cache soort: Multi Cache
Grootte: Klein
Status: Kan gezocht worden
Tijd: 1:30 h    Lengte: n/b
Geplaatst op: 17-03-2021
Gemaakt op: 17-03-2021
Gepubliceerd op: 18-03-2021
Laatste verandering: 31-03-2021
0x Gevonden
0x Niet gevonden
0 Opmerkingen
watchers 0 Volgers
6 x Bekeken
0 x Gewaardeerd
Beoordeeld als: n/b
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Cache attributen

Parking nearby  Hilly area  Not available 24/7 

Lees ook het Opencaching attributen beschrijving artikel.
Beschrijving EN

St. Ann's Hill is almost surrounded by the M3 and M25 motorways. The noise is intrusive, but if you can ignore it, it is a nice place to walk. It is the site of a prehistoric fort, and St. Ann's Chapel was built on top of the hill about 700 years ago, though little remains of either. Nun's Well is the source of an ancient spring, though the current construction is probably less than 200 years old.

The walk takes the form of a guided tour, with your smartphone being the guide. A web page shows your position and the next location to visit on a map of the area. It is only a web page though, not an app, so the resources available to it are limited.

At many locations there will be a question to answer. Some are simple, some take a little more working out. When you are ready to start, visit and go to the start location, which is very near the parking.

The route is about 3 miles, and it is quite hilly. The terrain varies from good paths to more rugged sections, some steep hills with loose surfaces, and some muddy parts that get very slippery after rain. That's why it is rated T4. Most of the time, a pair of walking boots are the most suitable footwear, though trainers would be OK after a dry spell.

A guide time is about 1.5 hours.

Dogs are permitted throughout the route, but not every dog may enjoy it:-). The same applies to children;-). It is not suitable for cycling, buggies etc.

You will need a smartphone that supports location services (i.e. has a GPS chip), and you (obviously) should permit the web page to use that when it asks you. Similarly, if it asks for permission to use the "Orientation API" then you need to permit that too. You may find an auxiliary battery (power pack) to be an advantage, though I have never needed one.

I have tested this with a number of different phone / browser combinations. Chrome and Edge worked well on both Android and iPhone, as did Safari on iPhone. FireFox on both platforms suffered from intermittent loss of location updates that would not resume without reloading the page.

When you first load the web page, you are presented with some options - you can choose for the page to make a short beep as you enter a zone, and you can select the mode in which the direction pointer works - more of this later. If you are part way through and reload the page you can choose to continue from where you left off, or to start again. Finally, you may enter information about your phone and browser. This is entirely optional, it is just to help me build a picture of which combinations work best.

The main navigation screen above shows your current position as a flashing + cursor. The red circle is the detection zone round the next waypoint, and a red line joins the two.

A box with text in it is shown near the +. If it is covering a part of the map you wish to see, tap the rotate button in the top left corner and it will rotate clockwise around the +. This status box will always remain within the boundary of the map, but because you can zoom and scroll the map it may not always be on screen - just drag the map so that you can see it.

Distance is the distance to the next waypoint, in metres. The reported accuracy is shown (in red or green), but it is not used until it is better than 25 metres. To the right of Accuracy you should see a "spinner" - this rotates a quarter turn each time the phone supplies a new location, and is just an assurance that location updates are still arriving - some phones "forget", particularly if they are turned off and on again. If you are moving this should be updating once a second, but it is OK if it pauses while you are stationary. If there is no update for 25 seconds, the connection to the GPS is reset.

The black arrow in the green (or red) circle shows direction to the next waypoint. This should now work in both portrait and landscape, though the latter is still experimental. The operation of the pointer will vary depending on the capabilities of the phone and browser, and I discuss these modes later.

If you tap the description button, the status box is replaced by a larger box with information about the next waypoint. If you are inside a detection zone it will also show a text entry box and a button so you can answer the waypoint question. As a convenience, the Description button background will change from blue to green when you enter the detection zone.

At some locations there will be a question to answer, such as information from a notice board. Once you have answered the question correctly, the next waypoint is displayed. Some of the waypoints simply guide you on the route - when you reach one of these, the program moves to the next waypoint automatically without showing a question.

Back to the pointer modes. I have labelled these from 1 to 3. In general, the higher the mode, the better it should work, and the program by default tries to use the highest mode for which information is available. Mode 3 uses the phone's magnetic compass, if it has one, which allows the pointer to work while you are stationary. Modes 1 and 2 only work while moving - and the pointer will disappear if you go very slowly or stop. Mode 2 should work better but relies on information that not all phones provide. Mode 1 should work on all phones that have a GPS, but the pointer may be slower to respond, or jump about more.

The number to the right of the pointer tells you which mode is currently being used.

Having said all the above, the information supplied by the phone is not always of the highest quality. For this reason I have provided the option at startup to limit which modes the page uses. Normally just leave the maximum mode set to 3 on all phones at all times, but if you find that while it is using mode 3, the needle jumps around or points in the wrong direction (even after calibrating the compass), you can set the maximum mode to 2 - or even to 1, if 2 is also unreliable. The performance in mode 1 is not good, but it should always work after a fashion ;-)

To change the maximum mode (or change the "Beep" setting) you need to reload the page, select the desired option and ensure you have "resume" selected before you press "Start".

In mode 3, the page uses the phone's magnetic compass, the calibration of which can be disturbed by magnetic fields such as those inside a car. If it is not correctly calibrated then the needle will not point in the right direction, and this may be obvious as you are walking towards a waypoint. The phone is supposed to notify me if calibration is required, and I have programmed it to change the green ring around the pointer to red, but I have never received such a notification from any phone, even when it clearly needed calibration;-). The official instructions for recalibration are to "wave the phone about a bit" but that isn't very scientific - what you ideally need to do is rotate it fully through all 3 planes. Hold it horizontally in front of you and slowly rotate it through 360 degrees, keeping it flat.. Then keep it pointing in the same direction as you slowly roll it through 360 degrees. Finally, slowly flip it over from end to end through 360 degrees. This works on an iPhone and probably is similar on Android.

Extra waypoints
WP nummer Symbool Soort Coördinaten Beschrijving
Parkeerplaats --- Parking for a dozen cars inside the gates. There is also space for a couple more outside the gates.
Logs: Gevonden 0x Niet gevonden 0x Opmerking 0x