Children's SF: "Tripod" or "Mountain" something or other?

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Back when I was in elementary I vaguely recall reading part of a sci-fi series in the young adult section. (I had a habit of reading outside my age group.) The story takes place after an alien invasion and revolved around two children who - as I recall - fled to the Mountains seeking refuge. The story reminded me a bit of War of the Worlds in that the alien invaders were mostly known by the tripod walking vehicles they traveled in.

Sorry, but that's about all I remember. I remember I really wanted to finish the series, but I lost the title and author and I never did find it again...

[Jim diGriz]

John Christopher's "The Tripods" trilogy consisting of 'The White Mountains', 'The City of Lead and Gold' and 'The Pool of Fire'. Also partly made into a tv series by the BBC back in the 80s.

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Ah, thank you!

I was pretty close with the title, then. My library searches came up empty. But I gave up looking before the Internet became available.