Made popular from the Reddit Post, this is a save file of a fortress called Wheelglow. In it, there is a Forgotten Beast fighting a Cave Spider man, and they have been fighting for like 7 years or so, I lost count.

If you choose to download Wheelglow, know these things:

1. This is my first fortress after getting back in the swing of things. Haven't played for a couple years or so. Expect miscellaneous disarray and a military that can't put it's own pants on. (Especially marksdwarves).

2. Your first course of action should probably be to disable the pump stack that powers the Dining Room water fall and supplies the wells with fresh water. Press F4 to reach the pump room, and remove the horizontal axle. Above the hospital there is another room with wells; you should de-forbid those doors to let the dwarves use these wells, the other ones will dry up. The only problem with the two wells behind forbidden doors is that the water is like a hundred z-levels below and it takes a long time to get water. If you don't disable the pumpstack I hope you enjoy lag.

3. There is no native iron on the map. There is very little easy-to reach blue spoiler tiles left. I have made about 15 sets of spoiler armor.

4. I don't use tilesets. If you want to use a graphic tileset you'll have to take the appropriate actions to make the save work with your tileset (I don't know what they are).

5. Don't mind the nicknames. Internet friends and IRL friends, hah.

TL;DR:
F1: Main(?) fortress floor.
F2: Magma.
F3: Awesome Fight
F4: Pump room. Disable pumps.

Have fun!