[peterclary]

There are Dragon's Teeth on the banks of the River Wey behind Waverley Abbey in Surrey, England. https://commons.wikimedia.org/wiki/File:Dragon%27s_Teeth,_Wa...

[onion2k]

That must be why you never see tanks around there.

[lapetitejort]

I've noticed there aren't a ton of tanks in my area and I'm wondering if there's some dragon's teeth buried in my lawn somewhere. Might do some random digging to find out.

[bombcar]

Lisa, I'd like to buy your Tiger[1] stopping rock.

[1] https://en.wikipedia.org/wiki/Tiger_I

[Borrible]

But, where is the dragon?

[xnorswap]

And down the road in Guildford: https://www.exploringsurreyspast.org.uk/through-the-dragons-...

[arethuza]

Remnants of the defensive lines from WW2?

https://en.wikipedia.org/wiki/GHQ_Line