Mal-Umbra's Inner Sanctum
A false world composed entirely of profane shadowy imitations of reality, contained within Mal-Umbra's own intangible being. Sometimes taking the form of a twisted replica of the surrounding terrain, other times an artificial construct of Mal-Umbra's own design, or perhaps a horrifying organic pit of tentacles. Being a fickle construct of will, nothing within is a permanent fixture, forming, folding away, or redesigning itself as seen fit.
In quiet times when not "entertaining guests", one particular form often taken is that of a single solemn looking mansion and it's grounds of colourless inky flowers. This space serving as the home for Henrietta, Mal-Umbra's pet. Outside of these grounds appears to be a somewhat blurred wider landscape, but this is merely illusion, since the limited worldspace soon wraps back in on itself the moment one attempts to leave it via direct means.