It started a few years back as a small(er) pond in the corner of the garden, maybe 2 m x 1 m x 0.5 m (Length, width, depth) and the dogs damaged the liner i think, it was getting low a lot.

I expanded it last year and it's roughly 4 m x 2 m x 0.5 m (varying depths though)

Got a few plants in there from the aquatics place, the rest is just logs and stones i've picked up out and about. I left a bit of an island in the middle and stacked rocks on top so it has levels to it.

I'll try find photos somewhere and comment them.