I was up in Yorkshire at the weekend staying with friends. One of them casually asked me during our walk through horizontal rain: "Do you know what clints and grykes are?".
I was tempted to reply "I'll show you my clint if you will show me your gryke" but because they are polite people I meekly said that no, I didn't. I'll show you, says he.
This is an example of a clint and gryke. The clint is the bit of rock and the gryke is the space in between. I was given a geology lesson about glaciers, water, limstone, carboniferous thingies, but basically they are bits of rock that form a sort of pavement, and very useful they are too when it is wet and the bog is coming through your boots, your socks are wringing wet and the pub is still another four miles away and you are getting more intelligent conversation from the sheep than ... oh I could go on. They are nice and hard and you don't go squish into them and loose your boot on the pull out.
Here's some more of them.
And some more.
And yet more.
So now we know what clints and grykes are. Bully for us.