Place
Maheśa-dhāma / Śiva-dhāma
Part of Maheśa-dhāma

Between two worlds
Between the material world below and Vaikuṇṭha's majesty above sits a domain that isn't quite either — a threshold rather than a settled address of its own. The chart draws it in two lights at once: a Mahā-kāla aspect, dark and dissolving, and a luminous Sadāśiva beside it — the same figure, Śiva, seen two ways depending on which direction you're facing.
How the tradition pictures him
Temple art gives this threshold a consistent visual language: ash covering the body — nothing material survives being burned, so nothing material is worth performing for — a crescent moon resting in his hair, time mastered rather than obeyed, and the Gaṅgā caught and slowed in his matted locks before she reaches the world below, a river whose full force would shatter what it was meant to nourish. The trident he carries is read, variously, as the three or the three tenses of time; either way, the point holds: what governs ordinary existence does not govern him.
One tradition's map
This is a specifically way of placing Śambhu/Śiva in relation to material causation. It should not be mistaken for a complete account of Śaiva theology, only for how this one chart draws the boundary.
Shown between the material realm and Hari- in the vertical hierarchy
It's the chart's admission that not everything sits neatly inside “spiritual” or “material.” Śiva gets a threshold of his own precisely because his role — governing material dissolution while remaining, in this tradition, a great himself — doesn't fit cleanly on either side of the line.
Source: Brahma-saṁhitā 5.43; Purāṇic/epic Gaṅgā-descent tradition; chart explanation · Direct scriptural supportCan you hold this as one tradition's map of Śiva, without needing it to settle every other understanding you've encountered?