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| The main track.  Riddlesdown, 12 January 2014. | 
I had been to 
Riddlesdown in lovely colourful summer, but it looks quite different just now. It consists of a long grassy ridge with small areas of woodland.  There is a track that leads from the top at the north end, down the side of the slope at a slant to the bottom at the south end, where there is a disused chalk quarry.  This pic is about halfway along and shows the golden, slanting winter sunlight.  As you can see, people like to stroll along here, including many dog walkers.
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| The railway crossing.  Riddlesdown, 12 January 2014. | 
Right at the bottom the track comes out to a road, but almost immediately there is a narrow path up to the left. It is marked "steep", which struck me as unusual.  But the warning was justified.  The first short stretch led to this railway crossing.  I paused here while I convinced myself that just using the crossing would not constitute a trespass. 
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| Steps up from the railway.  Riddlesdown, 12 January 2014. | 
Then, some steep steps.  I found it difficult to take photos that showed the slope convincingly, but I think you can see it here.  This view is looking back down.  To the right from this viewpoint, which was to my left as I climbed on, I could see the quarry, looking very wintry.  The edge is only a few feet past the railings.
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| The quarry from just above the railway.  Riddlesdown, 12 January 2014. | 
The summer sunshine contrasts with the shadowed area, which is still frosty and looks bluish.  That's because the sky scatters blue wavelengths sideways, leaving yellower rays to strike the chalk.
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| The path up the side of the quarry.  Riddlesdown, 12 January 2014. | 
Does this look steep?  It felt it; and slippery, too.  I had to hang on to those railings all the way up.  I was surprised to find such a poorly made pathway after the steps earlier on.  I would have expected either much rougher steps, perhaps lengths of wood pegged into place, or a metalled path all the way up.  The actuality seemed inconsistent.
We are well past dog-walking country at this point.  But still close to civilisation.
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| Whyteleafe from the top of the quarry.  Riddlesdown, 12 January 2014. | 
This is the top of the quarry, looking towards the town of Whyteleafe on the far side of the valley.  I am looking over the edge that you can see on the right two photos back.  
All the photos were taken with my iPhone.