Judging from the "river" that's been carved out, I'm guessing that you're recreating a 2D style map
Looking at it again though, those look like they might just be the scars of channels that had been mined from above to drain the pools before the map was cleared down to the same level as the bottom of the pools. It's hard to tell.
Not sure what the blocks are for though... building up a proper cliff face? Or just something to do with the stone after carving down an entire mountain?
I also see loads of bins, presumably for crafts or such.
I have no idea what those stockpiles on the right are, ammo?
I think those are metal bars, which would explain why they're mixed in with blocks: it's a bar/block stockpile by default.
Which means that all those bins are likely to be blocks also.
There appears to be vast stockpiles of stone blocks, that much I can figure out; up in the upper left there's something that looks like a wood stockpile, but I can't figure out what's in the stockpile directly below that one.
The yellow-brown land in the middle, I think that's a desert, but I haven't a clue what the white squares on the sides are.
If you're talking about the leftwards upper-left stockpile, I think those are barrels; most likely food and booze. The one below that is probably bags. If this is a desert, I would guess that they're filled with sand.
I thought the white tiles on the side looked like unmined stone tiles, but there are objects (such as beds and dwarves) that are "embedded" in it. Maybe smoothed stone floors?
