[Tagging] change recommendation from "depth" to "length" for the adit length?

[Warin]

+1 ...
It is like the length of a road .. roads twist and turn so the length is 
longer than the straight line distance.
The 'depth' of a tunnel is the straight line distance, not the distance 
you travel by going along it as it may twist and turn.

I am afraid 'English' words have many meanings! It may have been better 
to define vertical depth as a negative height value e.g.
height=-15 would be a 'depth' of 15 metres.. too late now.

On 12-May-17 06:02 PM, Colin Smale wrote:
>
> Then I would suggest "length" is what you mean here, as it has no 
> direct relation with the distance from the surface.
>
>
> On 2017-05-12 09:54, Michal Fabík wrote:
>
>> On Fri, May 12, 2017 at 9:32 AM, Colin Smale <colin.smale at xs4all.nl 
>> <mailto:colin.smale at xs4all.nl>> wrote:
>>
>>     B) the distance one would have to travel to reach the end of the adit
>>
>> This. Any straight-line distance can be determined reasonably easily 
>> from a map, using its scale and a piece of string. A length of a 
>> twisty path, not so much. Granted, adits aren't usually _that_ 
>> twisty, but entering a mine is always a potentially hazardous 
>> undertaking and it's important to have as much useful information at 
>> hand as possible.
>>
>> -- 
>> Michal Fabík
>>

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