Weird Lego base plates?

Hi There,
Thank you for adding me to the forum
I bought my 6 year old a huge bag of 2nd hand lego, in it, were these odd looking base plates. The lady I bought them off said that they no longer make these and that they are for landscaping - to put trees on?? The trees that we have (x-mas tree looking ones) don't seem to fit on the base plates and we have no idea what to do with them?
They are rectangular with a circular depression in the middle with one hole in it for presumably a tree and then on the outside there is space for the plates to be connected with normal bricks? (sorry very bad description)
Can anyone shed any light on these for me please? I tried googling to no avail, but I am probably using the wrong description.
Thanx in advance

(I can't seem to upload a photo for some reason??? Obviously not techy enough!)

If they are green, then you have plates to form a soccer field for the short lived Lego Sports theme.

Welcome legomum77,

What a great and proud name.

To upload photos to ANZFOL, you need a Brickshelf or Flickr account.

Follow the tutorial on ANZFOL

https://aussielegofans.forummotion.com/t148-tutorial-deeplinking-images

What colour are the baseplates?

Are they marked LEGO?

How many studs wide are they?

I am intrigued.

I look forward to seeing a photo of these mysterious baseplates.

Do they look like moonscape?

Yes of course LT.
I missed the word rectangular.

These 8 x 16 bricks are the soccer ones if green.

Hang on rectangular......

but that is 8x8, not 8x16 ???

LT, that is the half size.
Most of the ones in the soccer sets are the 8 x 16

Yep that's them Mine are rectangular so they have 2 of the "thingy's" on each side!!
LOL, so technical
Thank you lightningtiger - saves me putting up a photo.

So they are for a soccer game? How odd!
Thank you so much for your assistance, I will let my son know!

The minifig players were mounted on special multi-direction flingers of sorts so they could whack to ball into the net.

legomum77,

You'll be pleased to know that 5 of the green soccer baseplates are under the surface of my new station platform in the town forum.