half tartan
When entering the underground area in sulphur pools, a visual filter is applied to the screen to darken it. When exiting the underground area, this filter is inconsistently removed and can only be dismissed in some cases by pausing and unpausing the game. I suspect this is linked to one of the entrances but I have not extensively tested this: however it occurs every time I visit sulphur pools on a unmodded version of the game.
wooden tangle