Does anyone recognize this old terrain?

Hello, I recently picked up an estate sale of some possibly old Lotr minis and some foam, puzzle piece terrain. I don't know the year.

It got damaged by moving it, and I obviously don't have instructions to put it back together.

Just wondering if it's worth getting all the foam pieces together and rebuilding this and the awesome Tower of Sauron that I picked up.

Is this sort of thing worth any effort in preserving or should I bin it?

Thanks!